[GELÖST] Error message template

Recently, I purchased the TP Life template, and I am having trouble with its installation and activation.

First, I want to install the template on J3, and when it works, I will upgrade to J4.

All modules had been changed to module positions in the TP Life template, and I adjusted the settings like colour, etc. in the asteroid framework.

But I do get the following error when I activate the TP life template as default:

I do get a white page with the word error on it and in the heading of the tab, I see the following message:

Error: 0 Undefined  class constant 'MSG_EMERGENCY' – Facebook

Anyone who has an idea of what is going on and/or advice?

Thanks in advance!

Hier ist eine Erweiterung /Plugin für Facebook aktiviert, die nicht für Joomla 4 geeignet ist.
Entweder im Backend deaktivieren (falls der Zugriff noch funktioniert) oder in der Datenbank manuell deaktivieren.
openbook.rheinwerk-verlag.de/joomla_3/24_002.html
Siehe Link ab 24.2.2.

Thanks for your reply and I will try to find out which plugin is causing this. But for the record, the website is not running on J4 yet, but still on J3. So maybe there is a plugin which is not suitable for the TP Life Template? I posted it in the J4 forum because a forum for J3 is not available anymore. Thanks, Floris

Astroid 2.6.6 für Joomla 3 und 4 (bei Update von J3 auf J4 verwenden).
Astroid 3.0.3 nur für Joomla 4 und Joomla 5 (nicht für Joomla 3).

I am indeed working with Astroid 2.6.6 so that is not the problem.
Thanks,
Floris

Mach zuerst einmal eine Fehleranalyse, um das Plugin zu finden:
forum.joomla.de/thread/6467-fehler-finde...ug-modus-call-stack/