I am at my wits end! I am upgrading my test server to Moodle 4.2.6 because our IT department upgraded the apache OS server and PHP to version 8.2. I fixed all the issues and this is the last item to resolve. I have read just about all the issues people have tried which have not worked for me. The default theme for my site is adaptable. I downloaded the 4.2 version for every theme and copied the boost folder over from the previous version. There is no new version for the boost theme. I can't delete the boost folder or uninstall it because I either get errors after deleting the folder or when I do access the site every time I click to try and uninstall it goes back to the upgrade window to continue.
Please help me I don't know what else to do besides have the IT group revert back the apache OS and PHP back to version 7 so that I can restore the site and then uninstall those themes before doing the upgrade again.
by marisol castro.
