after installation Class missing Topic is solved

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trixo707
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after installation Class missing

Post by trixo707 » Wed Nov 22, 2023 10:12 am

Joomla told me "installation succesfull" but then "Class "Joomla\Plugin\Behaviour\Compat\Extension\Compat" not found" appeared. No chance to log in.
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toivo
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Re: after installation Class missing

Post by toivo » Thu Nov 23, 2023 10:07 pm

Welcome to the Joomla forum!

The missing class is declared in the file plugins/behaviour/compat/src/Extension/Compat.php. Does that file exist?

Locate the file administrator/cache/autoload_psr4.php and delete it. Access Joomla 4 again and the file will get recreated automatically. This file is a map to all PHP classes Joomla uses and it is created and maintained automatically.
Toivo Talikka, Global Moderator
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djcaptpln880
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Re: after installation Class missing

Post by djcaptpln880 » Fri Dec 08, 2023 3:36 pm

Do you have a backup to restore that is recent? This may be an easier more crude way to solve it...then look into why it maybe happening.
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StanByford
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Re: after installation Class missing

Post by StanByford » Fri Dec 22, 2023 6:23 pm

toivo wrote: ↑
Thu Nov 23, 2023 10:07 pm
 Welcome to the Joomla forum!

The missing class is declared in the file plugins/behaviour/compat/src/Extension/Compat.php. Does that file exist?

Locate the file administrator/cache/autoload_psr4.php and delete it. Access Joomla 4 again and the file will get recreated automatically. This file is a map to all PHP classes Joomla uses and it is created and maintained automatically.
Thanks, had the same problem, that fixed it for me.
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mtomy2008
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Re: after installation Class missing

Post by mtomy2008 » Wed Jan 31, 2024 8:42 am

toivo wrote: ↑
Thu Nov 23, 2023 10:07 pm
 Welcome to the Joomla forum!

The missing class is declared in the file plugins/behaviour/compat/src/Extension/Compat.php. Does that file exist?

Locate the file administrator/cache/autoload_psr4.php and delete it. Access Joomla 4 again and the file will get recreated automatically. This file is a map to all PHP classes Joomla uses and it is created and maintained automatically.
Appreciate it Toivo!, encountered the same issue, but that solution worked for me.
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