4
The logged in user doen't have permission to view the activity. Does the activity type belong to Case? Or Non-Contact component? Do the user have edit all contact permission?
3
I have repeated the new install, this time including this:
composer config extra.enable-patching true
The site now completely renders UI contents, such as the new mailing page or the status page.
So then, going to the troubled upgrade site, having first configured the install with these composer configurations:
composer config extra.enable-patching true
...
2
On windows use attrib -r C:\xampp\htdocs\drupal\sites\default to make it writable.
2
Did you run check-req with the --cms-base-url argument? It needs to be specified there too.
2
I narrowed this down to one particular contribution page. Others were working as expected. I don't know what the problem was, but I worked around it by simply creating a replacement for that contribution page. Thanks to everyone who gave this some thought.
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