I have made a copy of my live site M2.4.2 to a dev site subdomain on the same server.
I copied all the files,
created a new database & imported a dump from the original
Changed core_config_data to the new subdomain
Changed app/etc/env.php to new database details & also downloadable domains to new dev site.
Deleted var cache, page cache & logs
run: php bin/magento cache:flush & clean
Website appears to be ok but when I log into admin only Dashboard & Find Partners & Extensions links work on the left menu. Also if I click onto the username used to log in in order to log out instead of giving me a sub menu it goes to the account information page.
Someone suggested deleting the var folder all together & running:
php bin/magento setup:static-content:deploy
but that didn't work either.
Hello @anim8design
It seems to be the Magento and database connection are not proper. please run all the commands like the setup: upgrade, deploy indexer and clean the cache file. after that check the admin issues.
If my answer is help full and you get the solution then please click on the accept solution and give me kudos.