Problem with Joomla 3.10.11

[detector]

I have updated Joomla from 2.5 to 3.10.11. After the installation, I encountered a problem where I only see a white screen in the administrator area, without any menu or text. The error message says:

Error: Unknown column 'a.client_id' in 'where clause': Unknown column 'a.client_id' in 'where clause'

Therefore, I cannot do anything in the administrator panel. On the published website, there is a message:

Notice: Undefined index: media in /home/xxxx/public_html/plugins/system/t3/includes/core/minify.php on line 237

Please help me resolve this issue in the control panel.

Thanks for help

[Per Yngve Berg]

Mod. Note: Relocated the topic from Installation to the J3 Upgrade forum.

[toivo]

You can disable the system plugin T3 in two ways. Use FTP or File Manager from the cPanel provided by your host to change the name of the folder plugins/system/t3. Alternatively, use phpMyAdmin or a similar MySQL client application to edit the database table _extensions. Locate the row for the system plugin T3 and change the column 'enabled' from 1 to 0 and apply the change.

If your front end template is using the T3 framework, you may be able to continue with it if you get rid of PHP notices by setting Error Reporting in Global Configuration to 'Simple' or 'None', which is the recommended setting for live production sites. In any case, check the download pages of the template and T3, if there is a later version for Joomla 3.10.

[detector]

Can you help me where i found this T3 update and how update this in cpanel?

[toivo]

Can you help me where i found this T3 update and how update this in cpanel?

You can get the latest version of T3 for Joomla 3.x from T3 Framework and JA Purity Templates or T3 for Joomla 3 & Joomla 4.

Joomla templates and frameworks are like normal Joomla extensions, installed and updated from the back end of Joomla, not from the cPanel provided by your host.

[detector]

I encountered a problem where I only see a white screen in the administrator area, without any menu or text. The error message says:Unknown column 'a.client_id' in 'where clause'

So i can work only from cpanel.

[toivo]

Go to Extensions - Manage - Database. If the blue banner with the heading Notice shows a warning and not the text "Database table structure is up to date", click the button Fix at the top to update the structure of the database tables.

[detector]

Do you understand that I can't see anything except a white screen? I can't go on Extensions because I can't see the menu. All I can do is within the hosting cpanel.

[toivo]

Ok, did you use the File Manager in the cPanel to rename the system plugin T3?

Try to go directly to the Database in the back end, using your URL, and then click the Fix button at the top:

Code: Select all

http://my-url/administrator/index.php?option=com_installer&view=database

Use the File Manager to write-enable and edit the file configuration.php in the main Joomla folder so that Joomla displays more detailed error messages with the PHP call stack, which can then identify the source of the PHP fatal error:
[code]	public $debug = '1';	
	public $error_reporting = 'maximum';

[detector]

Doesn't work in this link i still see only white screen. I have backup file for website (public html). How to upload a backup my website?

[Per Yngve Berg]

A Backup of the files in public_html will not be sufficient as the database is also needed.

[detector]

I have also sql zip File. How can I delete all Joomla updates in cPanel?