Site Restoration

#35898 Restoration Joomla 4 completed, but website gives error class Joomla\Plugin\System\AdminTools\Extension\AdminTools not found

Posted in ‘Site restoration’

This is a public ticket

Everybody will be able to see its contents. Do not include usernames, passwords or any other sensitive information.

Environment Information

PHP version

n/a

CMS Type

Other

CMS Version

n/a

Backup Tool Version

n/a

Kickstart version

n/a

Latest post by pwouda on Thursday, 30 September 2021 05:25 CDT

Thursday, 30 September 2021 02:32 CDT

pwouda

Hi there,

On localhost I created a Joomla 4 website from scratch, with Akkeeba Backup Pro and Akeeba Admintools Pro (both different download-id's). It works fine there, and the backup runs without problems.

Also the restore of the backup using kickstart on an online server, there are no problems.

When I want to open the website, or open the administrator-page, I get the error Class "Joomla\Plugin\System\AdminTools\Extension\AdminTools" not found

Thanks for checking this out.

Best regards,
Peter

Edited by on 2021-10-30 20:45 CDT

Thursday, 30 September 2021 03:15 CDT

tampe125

Hello,

this is Joomla that is not updating the list of PHP classes for the installed extensions.

Please get inside the administrator/cache folder and delete the file autoload_psr4.php . Then open your site again, that should fix your issue.

Davide Tampellini

Developer and Support Staff

🇮🇹Italian: native 🇬🇧English: good • 🕐 My time zone is Europe / Rome (UTC +1)
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!

Thursday, 30 September 2021 05:25 CDT

pwouda

Thanks, that did the trick!