Sorry, I messed up, trying to update from 5.1.0 beta 2 to 5.1.0 RC.

Hi,

I took me a while but I found the condition when this occurs : enable Error reporting to default or higher.

In this case, ajax answer contains a lot of notice message :

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$folder is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$folder is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$folder is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$folder is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$jversion.full is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Object\LegacyPropertyManagementTrait.php on line 135

Deprecated: Creation of dynamic property Joomla\CMS\Updater\Update::$changelogurl is deprecated in D:\laragon6-------------\www\j503rc\libraries\src\Updater\Update.php on line 452

First notice comes from administrator\components\com_joomlaupdate\src\Model\UpdateModel.php line 1630 :
$update->set('jversion.full', $joomlaTargetVersion);

very odd. I am using laragon and php 8.3.3 on windows and I have not been able to replicate this

It only appears if you set error reporting to default.

checkCompatibility in UpdateModel is used for non core extension.
So if you have any non core extension, you'll see these notices.

I just tried on a clean Joomla 5.0.3 version with latest Akeeba backup : same error when trying to update to 5.1.0-rc

I took me a while but I found the condition when this occurs : enable Error reporting to default or higher.

I checked with error reporting set to maximum

Update a test website

I missed this part and was just checking for updates. Will test again

To fix this, we have to add the missing definitions in libraries/src/Updater/Update.php.
I'm trying to create a new PR to fix this, but, as I already have one in progress, I can't achive this.

I still cant replicate the error

@brianteeman Deprecated: Creation of dynamic property type of warning is specific to php 8.2+.

I am using 8.3.3

PR #43226 fixes this.
It took me a while to figure out it had to apply to Joomla 5.0 (I'll fill up a coffee issue asap)

Closing as having a pull request. See #43226