@stepd123 thanks for reporting. We have here also Reports about this Issue.

i have the problem too only for one site (i update 47 sites)

@micker there are other Threads with some Solutions. Please have a Look if some can help you.

hello i didn't found any threat in github .. sorry
i try to re upload j3.8 file same error

@micker Give exact errors.

@micker i meant #18011 #18012 #18015 #18018 #18020 or #18025. At Issue Tracker they are marked as "Critical".

@stepd123 Do you have /libraries/cms/version/version.php after update to Joomla 3.8.0?

my error is Fatal error: Cannot redeclare class JInput in /home/comiteol/www/libraries/fof/input/jinput/input.php on line 39
i didn't have version folder in libraries/cms/ (only class, html less)

i trying to upload all core file but same error

@micker Check if you have /libraries/joomla/input/input.php file.

@wojsmol the /libraries/cms/version/ and /libraries/joomla/input/ have been reoved in 3.8, so I don't have either folder.

I've gone through the other threads referenced by @franz-wohlkoenig and none have a solution to this problem. Also, I can't run the postupdate.php script, because it gives that same error messsage that showed up at the end of my update from 3.7.5 to 3.8: Fatal error: Call to undefined method JVersion::refreshMediaVersion() in /libraries/src/Application/WebApplication.php on line 1064

Under System|System Information the version is now listed as Joomla! 1.6.3 Stable [ Onward ] 18-Apr-2011 23:00 GMT. Where is it pulling that information from? Is there some was we can manually update the Joomla version number in the database or somewhere else?

@micker, if you're comfortable using phpMyAdmin, you can disable mod_version under the extensions table, then instead of logging in at /administrator/ log in to a direct page like /administrator/index.php?option=com_content which will bypass the home control panel page (that's the only page that gives the "Fatal error: Cannot redeclare class JInput in..." error message. If you get in, check the System Information page and let me know what version of Joomla is listed.

Hi

There is definitely something wrong with the 3.8 upgrade. have reinstalled from backups, and tried twice more. failed.

NO messages after installation.

Out of six sites, four upgraded fine. Two - both are sub domains at tdocplus.co.uk - did not.
Sites work fine, but in the back end all the additional plug ins have disappeared from the components menu including JCE, Akeeba, etc.
I am going back to 3.75 for these sites.
Anyone want the Akeeba back up files - please email me.

Richard

parkdavidson.co.uk - fine
accountabilityscotland.org.uk - fine
unaccountablescotland.org.uk - fine
rgtr.tdocplus.co.uk - fine
lp.tdocplus.co.uk - site works, back end problem - a large site from J2
wp.tdocplus.co.uk - site works, back end problem - an old site from J1

@rgtr On this 2 sites the only problem is related to Components menu?

@stepd123 I know about file move but I recently see cases when update timeout during the process. Which version of Joomla did you upgrade from?

Hi @wojsmol, like it says in my report, I upgraded from 3.7.5. :-) The important information in my report is that right after the update hit 100% and apparently tried to finalize, it was unable to update the Joomla version information and gave the error "Fatal error: Call to undefined method JVersion::refreshMediaVersion() in /libraries/src/Application/WebApplication.php on line 1064" Because it wasn't able to update the version information, the Joomla! Version Information module (mod_version) that shows the version number a the bottom of all admin pages breaks admin until you disable the module.

Whether there were a few other finalizations that were supposed to happen after the Joomla version info gets updated, I don't know. Developers would know the installation order.

Reporting in to confirm we have the same issue with 1 particular website. We upgrade numerous other websites which are all hosted and essentially the same core setup without problems.

I restored and went through every extension one by one and compare with a working website to make sure nothing was interfering and still got the issue.

Updating from 3.7.5 to 3.8

*I checked other issues linked above and none are related or helped with their suggestions.

As I am out of options I have rolled back to 3.7.5 until this is figured out.

@stepd123 Please check if files /libraries/src/Version.php and /libraries/classmap.php exists

I'm having the same issue. I do have a /libraries/src/Version.php, but it (and factory.php) are both dated Sep 19 -- everyting else in that directory is dated Sep 21 (today).
My classmap.php also exists, and is also dated Sep 19th (as are some other files in that dir):

drwxr-xr-x 29 www-data www-data 4096 Sep 21 15:20 joomla
drwxr-xr-x 16 www-data www-data 4096 Sep 21 15:20 legacy
drwxr-xr-x 5 www-data www-data 4096 Sep 21 15:20 cms
drwxr-xr-x 52 www-data www-data 4096 Sep 21 15:20 src
drwxr-xr-x 12 www-data www-data 4096 Sep 21 15:20 .
-rw-r--r-- 1 www-data www-data 40763 Sep 19 08:00 classmap.php
-rw-r--r-- 1 www-data www-data 3940 Sep 19 08:00 cms.php
-rw-r--r-- 1 www-data www-data 2848 Sep 19 08:00 import.legacy.php
-rw-r--r-- 1 www-data www-data 1553 Sep 19 08:00 import.php
-rw-r--r-- 1 www-data www-data 31 Sep 19 08:00 index.html
-rw-r--r-- 1 www-data www-data 22079 Sep 19 08:00 loader.php
drwx------ 25 www-data www-data 4096 Aug 30 14:55 ..
drwxr-xr-x 11 www-data www-data 4096 Apr 26 09:50 vendor
drwxr-xr-x 2 www-data www-data 4096 May 19 2016 php-encryption
drwxr-xr-x 26 www-data www-data 4096 Apr 21 2015 fof
drwxr-xr-x 2 www-data www-data 4096 Oct 1 2014 phpass
drwxr-xr-x 2 www-data www-data 4096 Oct 1 2014 idna_convert
drwxr-xr-x 5 www-data www-data 4096 Jan 19 2011 phputf8

Possibly of interest (?):
$ grep JVersion classmap.php
JLoader::registerAlias('JVersion', '\Joomla\CMS\Version', '5.0');

@wojsmol yes I have both files. I don't think I'm missing any files at this point.

I have attempted to install the full 3.7.5 package again over the original 3.7.5 website and attempt the upgrade again - got the same error. I have tried on this website through various troubleshooting a good 5-8 time.

@wojsmol I checked for those two files exist for me.

Administrator Error after update:
0 Call to undefined method JVersion::refreshMediaVersion()

error_log entry:
PHP Fatal error: Cannot declare class JInput, because the name is already in use in /home/XXXXXX/public_html/libraries/fof/input/jinput/input.php on line 39

Another datapoint. Running postupdate.php manually brings up:
Call to undefined method JVersion::refreshMediaVersion()

but then clicking on any of the menu items gets:
"Undefined class constant 'PRODUCT'"

@wkumari Please compare

Mine has \\ as expected

It may just have been the comment editor here - I have to put three lines because it strips off one \

Yup, sorry, I simply coped and pasted -- didn't realize GH would strip the double slash.
Here it is again:
JLoader::registerAlias('JVersion', '\\Joomla\\CMS\\Version', '5.0');

md5sum of classes:
77ca1b48d7199b2164f40cef16c874f4 /var/www/html/kumari.net_old/libraries/classmap.php

@mbabker Any idea about source of this error?

1. JVersion isn't a "real" class anymore in 3.8 (see all the other comments I've made about the alias stuff), no error message should be using that class name.

2. The fact there is an error message using that class name means it still exists somewhere in the file system (if you can, grep "class JVersion"). The fact that it's not at libraries/cms/version/version.php means either some extension overloaded it (that'd be crazy) or you still have a copy of the file from an even older release (except for the 1.5 path none of these paths would be autoloaded, but for completeness), the JVersion class was moved to libraries/cms at 2.5.0 and stayed there until the namespacing work in 3.8, in 1.7 it was at includes/version.php, in 1.6 at libraries/version.php, and in 1.5 at libraries/joomla/version.php.

Perfect information @mbabker - I have resolved the problem. This was an extremely old website that was upgraded over the years.

I had a libraries/joomla/version.php

I removed that file and the backend errors are gone.

A++

From my broken site:
$/var/www/html/kumari.net# grep -ri 'class JVersion' *
libraries/joomla/version.php:class JVersion
$ ls -al version.php
-rw-r--r-- 1 www-data www-data 3092 Jan 12 2011 version.php
$ mv version.php ~/tmp/

... and fixed!

From the old version.php (in case it is useful):

I also have an old version of that file at \libraries\joomla\version.php

Removing it fixed the errors for me too. Good call @mbabker

Probably would be a good idea to have Joomla installer check for older versions of that file, or add some kind of error handling. Thanks.

@wkumari and @stepd123 Then use this instruction

My site is very old (more than 2000 pages). After the upgrade from J3.7.5 to J3.8, several pages do not open, ERROR 500. Other pages work fine. Any ideas? Guys, I'm really surprised, the work of developers leave much to be desired. I was forced to roll back to the old version, J3.7.5.

for solved with delete /libraries/joomla/version.php

@micker, I do not have this file:

$ ls libraries/joomla/
access          cache       document     filesystem  http        linkedin   oauth1         platform.php  twitter
application     client      environment  filter      image       log        oauth2         profiler      updater
archive         controller  event        form        index.html  mail       object         route         uri
association     crypt       facebook     github      input       mediawiki  observable     session       user
authentication  database    factory.php  google      keychain    microdata  observer       string        utilities
base            date        feed         grid        language    model      openstreetmap  table         view

Any ideas? I do not use seo-extensions on the site. But after the last update, the site can not work in a normal mode.

for solved with delete /libraries/joomla/version.php
If that works is there anyway to do that during the update process ?

Hi

In answer to these questions:

1. @rgtr On this 2 sites the only problem is related to Components menu?
   YES, four are perfectly ok. just the add ons missing - akeeba, jce, mavik, etc
2. @stepd123 Please check if files /libraries/src/Version.php and /libraries/classmap.php exists
   YES - both dated 19 Sept 17
3. @franz-wohlkoenig /libraries/joomla/version.php
   I do NOT have this file

I have read issue 18000.
So it seems we have a problem still.

Anyone want the akeeba jpa before upgrade, please let me know.

Richard

Hi
I do not have any of these files, the offending sites were started in J1.5

in 2.5 at libraries/cms/version/version.php
in 1.7 at includes/version.php,
in 1.6 at libraries/version.php,
in 1.5 at libraries/joomla/version.php.

Richard

On a particular site I had the same issue on the backend only "Fatal error: Cannot redeclare class JInput in /libraries/fof/input/jinput/input.php on line 39" . That was an old site migrated continuously since 2007, removing "libraries/joomla/version.php" solved the issue. I was adding the file in script.php , updated Joomla_3.8.0-Stable-Update_Package.zip and completely re-run the upgrade with "Upload & Update", worked like a charm.

This topic should be closed and resolved so others with unrelated issues can open a new one. This is becoming confusing.

@stepd123 - can you help closing?

@Skyla-Scott There are 2 more Issues open to similar Issues: #18033, #18064. I would let this Issue open for a few Days more as it has helpful Comments.

Users can always open a new Issue.

I didn't know it was typical to bundle issues together - this topic had a very specific error a number of us had and was resolved by the exact same root cause. I figured it would be better to keep it clean in that sense but if it works better for others - go at it. I will simply unsubscribe to this topic at this point.

Part of the problem is we aren't getting issue reports with substantial data. The cases where there are error details (like the admin CSS class thing or this JVersion issue) have been able to be addressed, but there are still a lot of people just posting "after update I have a 500 error" and have no error details so they either just file a new issue or find something with a title that sounds like "yep, this is me" and post a "me too" comment.

It really doesn't matter if this item gets closed or not. It's not going to change much.

Hi

We seem to have two issues here. One is that certain files that should not be on site, and I think that is closed.

But my issue is the loss of components from the admin menu - so accessing Akeeba in particular is difficult. I have uninstalled it and JCE.

I ask why we have FOF and why it is locked ...

Richard

Hi
I have reinstalled JCE and it is NOT on the component menu.
That means there is something in 3.8 which is preventing this from being added ....
Should I start another issue.
Richard

Hi
My sites are quite old, I wish I had the folders listed but I don't so no simple cure here by deleting a file. Backend errors and front end too :( extracted 3.7.5 back over it and site runs again. Posting to keep an eye on any other ideas. maybe it's time to start anew.

@wojsmol Just to know..

After login from backend (/administrator)
I had Fatal error: Cannot redeclare class JInput in /website/public_html/libraries/fof/input/jinput/input.php on line 39

0 I reloaded full version of Joomla on ftp: Joomla_3.8.0-Stable-Full_Package.zip
1 I removed installation folder.
2 Then I use this step as described here.

On page /administrator/postupdate.php
I had Fatal error: Call to undefined method JVersion::refreshMediaVersion() in /website/public_html/libraries/src/Application/WebApplication.php on line 1064

Now I removed "libraries/joomla/version.php" and now it’s work.

Thank you very much!

This is completely different to #18012 yet that was closed in favour of this. Big mistake closing #18012

I am having the same problem.
After updating to Joomla 3.8.0 my website stoped working and I get this message: This page isn’t working
ipsmlb.org is currently unable to handle this request.
HTTP ERROR 500. I even restored the site from Backup, but still I get the same message. Also the on the backend I get the same message.
Please Advise how can I solve the problem. Thank You

Actually just remembered I had a newish unfettled installation buried to test a template style out. Just put the update up over that and the site died, no front or backend. 500 Application Instantiation Error

@mawdsk

0. Make sure you have a backup of your site (files and database).
1. Download this package
2. Upload it to your site root and extract it with file manager.
3. Remove installation folder.
4. Remove /libraries/joomla/version.php
5. Then use this file as described here.

@Webdongle reopened #18012

i couldn't find /version.php

0. already done

1. did do but was scared to update :D

2. done

3. done

4. didn't have

5. did and message said upgrade to 3.8.0 complete

6. backend works and version correct, all other updates already applied. Front end not running but does with beez3 template so looks like I need to check jsn templates now before updating.

Thanks for that, I'll go investigate further.

did as instructed, now i have this message on both frontend and backend
: Error displaying the error page

@rgtr Please run https://raw.githubusercontent.com/joomla/joomla-cms/staging/administrator/components/com_admin/sql/updates/mysql/3.7.0-2017-01-17.sql Replace #__ with table prefix.

@simm12 Frontend and backend?

@wojsmol thanks for helping.

@franz-wohlkoenig No problem :)

yes both of them. so how can I restore the website?

@simm12 Plesae check server error log if there any errors.

yes there are, lots of them

Attach as txt file.

wojsmol

Thanks for that.

Will report back on Sunday ...

I take it that these are sql commands to be run in root of database with phpmyadmin
I can cut and paste code one step at a time.

Richard

@rgtr Yes, remember to replace #__ with table prefix

Hi #wojsmol

the script ran fine.

however, the problem remains ... no plugins in the components menu.

some more thinking required ....
noted that i changed the table prefix a couple of times with admin tools - and it creates a set of tables with the new prefix leaving the old. so i removed all tables that did not have the current prefix ...

i have uninstalled akeeba and jce, and reinstalled them ... no change

attached the list of plugins ... is that any help.

none of my menus are called "main" or "menu" .

looks like the solution be a new install. is there a quick way to import menus and text. can copy the media no problem.

richard
wp38_plugin_list.txt

@rgtr Please attach dump of #__menu table in sql format.

#wojsmaol

attached menu table, and whole database just in case.
had to zip them as that sql format is not allowed

cl26-wp_290417.zip
eqib_menu.zip

just tried updating from version 3.70 backup ... same so its seems its in the update process

richard

#wojsmaol

is the problem that the admin menu rows with capital letter descriptors [JCE etc] are not being read properly...
very strange

richard

@rgtr Give me chence to check the database 😄

@wojsmol

Sorry - brain in overdrive ....

R

@wojsmol

Hi, have been investigating.

In the two sites which have lost stuff on the admin components menu both had their prefix changed in admin tools.
zpdm7_menu.zip

attached the other menu from lp.tdocplus.co.uk

richard

@rgtr On database from #18020 (comment) run this query

UPDATE `#__menu` SET `access` = 1 WHERE `client_id` = 1 AND `menutype` = 'main' AND `access` = 4;

Replace #__ with table prefix.

@cmirnow Has your problem been resolved?

@wojsmol Yes, thank you. The decision was unexpected for me. In Joomla 3.8 the old module "DisplayNews by BK" suddenly refused to work (in 3.7.5 it worked fine):

Warning: require_once(/public_html/libraries/legacy/table/category.php): failed to open stream: No such file or directory in /public_html/modules/mod_dn/helper.php on line 22

Fatal error: require_once(): Failed opening required '/public_html/libraries/legacy/table/category.php' (include_path='.:/opt/php70/share/pear:/usr/share/pear') in /public_html/modules/mod_dn/helper.php on line 22

@cmirnow This module is incompatible with 3.8.0 developer uses require_once for files moved to different folder.

error log

@franz-wohlkoenig
Please help me out

I did this
@classicpark

1. Make sure you have a backup of your site (files and database).
2. Download this package
3. Upload it to your site root and extract it with file manager.
4. Remove installation folder.
5. Then use this file as described here.

I can not find the version.php
in 2.5 at libraries/cms/version/version.php
in 1.7 at includes/version.php,
in 1.6 at libraries/version.php,
in 1.5 at libraries/joomla/version.php.

But still having errors

Error: 0 Call to undefined method JAdminCssMenu::addChild()
Failed to load resource: the server responded with a status of 500 (Internal Server Error)

@simm12 Do you haqve a recent backup taken before update? If yes will go with little risky procedure.

@classicpark @wojsmol and others can help you more than me as i'm user, no Dev.

@classicpark Do you use sp page builder?

@wojsmol
Yes i have sp page builder but did not use it for a long time (;
And i never did make something with it so how can i delete it now i can not use my admin panel

In my database i found one table named sppagebuilder
Amd on de server there is one dir under components/com_sppagebuilder and by admin also under components/com_sppagebuilder
Can i dele those incl the database table?

@classicpark See this post. After accessing back-en uinstaall or update sp page builder.

@wojsmol thank you so mutch that fixed the problem .
Final qestion if i delete sp page builder bij joomla admin than is the problem gone for in the future also i never realy used it

@classicpark There is simple rule: If you don't use same extension, then make backup and of the site uninstall it. You can delete error.log from your reply in you wont.

@wojsmol

that worked

thank you so much

richard

Hi guys, (i'm desperate!)
I ran the Joomla 3.8 update and it's broken the site/connection to the localhost MAMP.
This site was using SP Pagebuilder and I now can NOT see the Front/ or Backend login page.
All I get now for both the front and backend is:
Error displaying the error page
On my localhost (MAMP), I updated it from Joomla 3.7.5.
I normally backup using AKEEBA, but this one time I have stuffed up and didn't back up.

IS THE FOLLOWING POSSIBLE:
I am on a MAC, so I tried using Time Machine to go back a week and recall the 'site' and 'database' folders, but I have tried several ways unsuccessfully - including deleting my MAMP folder in Applications and bringing back last weeks version of the folder (pre the update)...
When I do this... it stopped MySQL working. In MAMP, after I delete the ib_logfile0, ib_logfile0, ibdata1 in MAMP - DB folder, I can get MYSQL to start, and I can install a completely new test site and everything works, but with the site I was building for the past 3 weeks - I get
'Error displaying the error page'.
I did get HTTP ERROR 500 after updating joomla 3.8 at one stage, but after recalling the older version of the site back... I now only get 'Error displaying the error page'.
I also have another site (that is NOT using SP Pagebuilder) and I now get on this site:
"Error displaying the error page: Application Instantiation Error: Table 'acwhalan.#__session' doesn't exist SQL=SELECT session_id FROM #__session WHERE session_id = '4773dcce42ab0ac63edd23c4974df369' LIMIT 1"

I am SO desperate to get this fixed ASAP.
What has this 3.8 update done... as it was all working fine last week.

So my question is... can I recover/restore this website (if I have NOT used a backup component like AKEEBA) by going back in time (using Time Machine on my MAC) and restoring the 'Document Root directory' (site files) and the Database (in the DB folder in MAMP), or are there other directories I need to recover this... as this hasn't worked for me so far?

Are the only 2 files that Joomla requires to run a site are the:
'Document Root directory' (site files) and the Database (in the DB folder in MAMP)?

Thanks,
Syco

So my question is... can I recover/restore this website (if I have NOT used a backup component like AKEEBA) by going back in time (using Time Machine on my MAC) and restoring the 'Document Root directory' (site files) and the Database (in the DB folder in MAMP), or are there other directories I need to recover this... as this hasn't worked for me so far?

Yes that should work.

When you say it doesnt work what happens

@swishimage the only think that seems to work for my sites is to extract the 3.7.5 update over your site and mine all ran again both front and back

@franz-wohlkoenig and others: I'm on work today so my replays may be delayed.

Hi Brian,

Thank you for the reply. When I say it doesn't work... After the roll back of both the MAMP Folder and the 'Sites' (root or htdocs)...

I just get the following message -for both Frontend and also the Backend Admin login... so I can't even login to do any suggested fixes?

Error displaying the error page<

@swishimage which Template you use?

@swishimage Please set $error_reportong='maximum' in configuration.php and post displayed errors.

It's the wheeler template - which uses SP Pagebuilder.
http://preview.themeforest.net/item/wheeler-taxi-company-cab-service-joomla-template/full_screen_preview/19299937?_ga=2.188337704.1469584736.1496124773-1706854449.1475126167

Where do I find this if I can't log in?

Please set $error_reportong='maximum' and post errors

@swishimage See updated #18020 (comment)

@swishimage there are known Issues by SP Pagebuilder (in other Threads) and also with different Templates (also other Threads).

I'm that desperate.. I'd be happy to pay someone... if they want to login remotely with Team Viewer to check it out :(

@swishimage there are known Issues by SP Pagebuilder (in other Threads) and also with different Templates (also other Threads).

Yes... i read some of them, but SP support will not respond to me contacting them about the issue.
One thing... I do have another site (not using SP Pagebuilder) and I get the following error:

_Error displaying the error page: Application Instantiation Error: Table 'acwhalan.#_session' doesn't exist SQL=SELECT session_id FROM #__session WHERE session_id = '071303cd7e1d0c1ec33f203a6d8b1dd1' LIMIT 1

With the SP Pagebbuilder site (Wheeler)...I did try deleting the the configuration.php file.. then copied the installation folder from the Wheeler Template and reinstalled ... and this DOES allow me to see and log into the back end. The only issue is when I do this is all the components like SP Pagebuilder are missing and the site looks like the default Joomla site. I then got 'errors' when trying to install the individual components that were missing.

@swishimage Checki if $dbprefix in configuration.php is correct.

Restore deleted configuration.phh and see #18020 (comment)

Restore deleted configuration.phh and see #18020 (comment)

I've restored the whole MAMP folder bback to PRE 3.8.0, and the 'htdocs' folder, but I don't get a login page... or frontend. It's like there's something else broken??

I guess I will try restoring the MAMP again - using Time Machine on my MAC tomorrow... nearly 1am need some sleep :) Thanks for the quick replies. I will come back to let you know how it goes.

_Error displaying the error page: Application Instantiation Error: 
Table 'acwhalan.#_session' doesn't exist SQL=SELECT session_id FROM #__session WHERE session_id = '071303cd7e1d0c1ec33f203a6d8b1dd1' LIMIT 1

I'm referring this database error.

Perhaps individual help is best dealt with in the forums not in error reporting ?

@Webdongle As you can see I'm recently quite active on forum, so if you wont we can close this issue and redirect to forum as always.

closed as stated above

Set to "closed" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/18020

@Webdongle Additionally god idea we should add few items to release FAQ to reduce number of new forum topics.

A FAQ would be a good idea but I dont understand the problem enough to write one. There are that many posts in the forum where the failure is down to 3rd party extensions/templates that its difficult to see what the real bug is ... let alone the work around until the devs bring out 3.8.1 that updates correctly.

@Webdongle IMHO the main issue is amount of files deleted is script.php and the problems with extracting or downloading the update package.

@wojsmol
IMHO "problems with extracting or downloading the update package" are due to bad (or insufficient) server settings.

@Webdongle Yes, you are right, but we must somehow resolve the issue. @Kubik-Rubik developed nice standalone script to check filesystem state, but it is incompatible with Joomla 3.8.0, no checksums. This would be nice tool when helping on forum.

I have a backup dated 20-09-2017 one day before the update.

@simm12 Please create topic on forum here As sugeststed by @Webdongle here this issue is now closed.

Try this:
youradress.com/administrator/index.php?option=com_installer&task=database.fix