Solved 500 Error only when trying to view a topic with attachements

Upgraded to the latest version. Now when I click a topic with an attachment, I get a 500 error. Other topics load fine.

Database collation check: The collation of your table fields are correct

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Kunena version detailed: Kunena 5.0.10 | 2017-06-30 [ Junco ]
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en-GB	English (en-GB)
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Plugins: Content - Kunena Discuss 5.0.3

Modules: Kunena Login 5.0.3

Please enable in the Kunena configuration (tab General) the debug mode. Then the error message is more precise.

Hi Rich,

I'm getting the kunena 500 error page with this text when debug is enabled..

Upgrade your Joomla it solves this problem.

This is not correct. The function call should be JFactory::getApplication()->isClient('administrator')

It seems that there is a problem with your installation.

Try to replace libraries/kunena/attachment/attachment.php with the correct one I have attached as zip-file.

should be JFactory::getApplication()->isClient('administrator')

hm.. but it seems that this function is causing an error (see here).

What irritates me ist that misterpat wrote that the function call is JApplicationSite::isClient(). It should definitely be JFactory::getApplication()->isClient().

Works on my website with Joomla 3.7.3 and Kunena 5.0.10.

This is weird. I usually just log into Joomla and it will tell me if there are updates available. It never showed the update to 3.7.3 otherwise I would have updated before starting this thread. I have updated and everything is working just fine now.

WolfgangOWL wrote: What irritates me ist that misterpat wrote that the function call is JApplicationSite::isClient(). It should definitely be JFactory::getApplication()->isClient().

Works on my website with Joomla 3.7.3 and Kunena 5.0.10.

The method was called like that : JFactory::getApplication()->isClient('administrator'), but this method is only available since Joomla! 3.7.0, i have made a change to use instead JFactory::getApplication()->isAdmin()