Akeeba Backup for Joomla!

#42539 Error updating akeeba backup

Posted in ‘Akeeba Backup for Joomla! 4 & 5’

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Environment Information

Joomla! version

n/a

PHP version

n/a

Akeeba Backup version

now 10.2.1

Latest post by pklinke on Saturday, 13 December 2025 04:29 CST

Friday, 12 December 2025 10:24 CST

pklinke

Today I updated my akeeba backup in the backend. This error occured

Es ist ein Fehler aufgetreten.

0 Pkg_AkeebabackupInstallerScript::postflight(): Argument #2 ($parent) must be of type Joomla\CMS\Installer\Adapter\PackageAdapter, Joomla\CMS\Installer\Adapter\PluginAdapter given

Sincerely

Peter

Friday, 12 December 2025 11:55 CST

nicholas

You updated Akeeba Backup (a package extension) together with a different extension that's of the Plugin type. Don't do that. Joomla breaks when you update extensions of a different type. There's a core bug in Joomla I reported nearly 3 years ago: https://github.com/joomla/joomla-cms/issues/41087 It's still not fixed.

Nicholas K. Dionysopoulos

Lead Developer and Director

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Saturday, 13 December 2025 04:29 CST

pklinke

Thank you, good to know!

Sincerely

Peter

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