I donāt think thereās any way to revert the upgrade. The correct thing to do is revert to backups or snapshots.
The stack traces can be obtained from configuration settings, without any IDE set up.
I havenāt tried these myself in quite a while, Iāve made my own logging system, see this PR, butā¦
You can use a SuiteCRM config_override setting called $sugar_config[āstack_trace_errorsā] = true;, see this for details.
And I think there is also a generic PHP setting, but I couldnāt find it just now. There are also option in Symfony, regarding ādevā environmentā¦