I had same problem - updating is corrupting a table (jycbs_weblinks) and causing MySQL to crash. Have your host company tech support check to see if InnoDB (and MySQL) is running.

hi my front page is working fine , all pages loading without error, the only problem with admin

Set to "closed" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/18047

closed as duplicate Report #18025

@johnsk1978

0. Make sure do 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. Then use this file as described here.

@wojsmol can you please write above comment also in #18025 to get Information in one Place?

@franz-wohlkoenig Comment added as planed and requested.

@wojsmol I did the way you said , but no result
I also tried mentioned here https://www.joomshaper.com/forums/joomla-3-8
still blank admin page

Please set $error_raporting to maximum in configuration.php.

I did, but no result

error getting after login to admin

This page isn’t working
www.mysite.com is currently unable to handle this request.
HTTP ERROR 500

Check server logs and Joomla error.php in logs folder.

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.

@cmirnow can you please read and comment at #18020

I rolled back to j3.7.5. I tried many ways, but couldn't fix. I am using flex template, may be a problem with template after reading https://themeforest.net/item/flex-multipurpose-joomla-template/14881156/comments. now waiting for their template update.

Please don't write same Question like #18025 in different Threads, thanks.

@wojsmol Thanks, this worked for me.

Hi All,
Experienced with similar situation, the problem might be in content of the configuration.php file.
Check for some copy-paste or butt error, e.g. if "</php class" have symbol omitted or similar.
Cheers,
Chavdar

See this forum post: https://forum.joomla.org/viewtopic.php?t=860554#p3503601 - surprised this issue still isn't fixed in 3.8.11

@ShibumiDesign can you please open a new Issue as Comments on closed Issues didn't get much Notice, thanks.

@Hackwar Please see link posted by @ShibumiDesign - old bug in com_finder.

@franz-wohlkoenig only posted as I experienced the same issue, and found this solution while searching, thought I would link to that forum post for anyone else searching this issue...