Your software
My Mautic version is: 4.4.9
My PHP version is: 7.4.8
My Database type and version is: MariaDB mysqlnd 7.4.33
Your problem
My problem is: I click “Save” or “Save and Close”, and the buttons gray out (inactive) but nothing happens. No errors, no screen change, and nothing I do will turn the buttons back on.
These errors are showing in the log: No errors
I also just tried this on another installation - different machine, same version, etc. and it just hangs when you click save. The record does not get saved.
I can edit a record with no problem.
Do you have mod securoty installed on your server? What about wordfence?
OK, found the issue, my fault. We added a trigger to the Insert for Contacts, as we wanted to pre-set their “stage”. That was failing, we commented it out, and all good now.
Thanks for the fast response, Joey! 
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