A suggestion is to switch the template to Protostar and then update Joomla. J4 will give you its default template Cassioepia. The Pre-Update check would tell you if anything is not compatible with J4, such as the Gantry 4 template etc. Then install the latest Gantry 5 (5.5.17) and relevant template.
This post (from 2 years ago) discusses Gantry 4 and J4 not working
viewtopic.php?t=991757
On the second issue you asked about, are you using Kunena v6.2.3 (updated 3 weeks ago)?
https://extensions.joomla.org/extension/kunena/
This post (from 2 years ago) discusses Gantry 4 and J4 not working
viewtopic.php?t=991757
On the second issue you asked about, are you using Kunena v6.2.3 (updated 3 weeks ago)?
https://extensions.joomla.org/extension/kunena/
Statistics: Posted by AMurray — Thu Feb 08, 2024 9:36 pm