Upgrade - Distribution Wizard hangs

Hi I just upgraded from 12.4.
Upgrade goes ok, xwiki starts up with initailization and then gets to the wizard.

When I press Continue, that request hangs and there is hence no log out put, seeing as how the server receives the request but never replies… Funny same thing happens before upgrade but with the Extensions page alone.

I know I can look in here:
cat /var/log/tomcat9/catalina.2020-12-02.log
Last line is:
02-Dec-2020 18:24:03.165 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [28,911] milli seconds

So I know its starts… where else could I look if the wizard Continue button request hangs like this?