I’m trying to update Grav from v1.6.31 to v1.7.9. It failed with the error that I need PHP v7.4. So I loaded PHP v7.4 and when I did, my site continued to work fine and the admin login page works fine. BUT… after login the admin panel is blank.
What do logs say? Usually in /logs/grav.log
Logs showed a memory error. I did have to install php 7.4 and I forgot to up all the PHP memory allocations. Having done so now, it works! Thanks for your help.