Error when creating a new attachment

[JLTRY]

I have been using your extension using since the very beginning when you published the add-on. Excellent work. I now have a problem after switching to the latest Joomla 6 (I was switching from Joomla 3). I can download attachments, but when I want to create a new attachment, an error pops up, see attachment.

[JLTRY]

Issue received by mail
Issue reproduced with Joomla 6.10

[JLTRY]

Can you please test this version

attachments_component.PR199.zip

[parapente]

@JLTRY I have tested the PR on a locally installed 6.1.0 joomla and indeed it seems to solve the issue.

[martinpihrt]

I confirm that the fix works (everything is working). To install it, I had to enable the Behaviour - Backward Compatibility 6 plugin in Joomla. In Joomla 6, use Joomla\CMS\Filesystem\Folder; no longer works (Class "Joomla\CMS\Filesystem\Folder" not found); it should correctly be called use Joomla\Filesystem\Folder. The Behaviour - Backward Compatibility 6 plugin resolved this. Thank you very much.

[JLTRY]

@martinpihrt yes I confirm that attachments needs the backward compatibility plugin see Issue #194

[JLTRY]

PR merged