I'm running Ubuntu server 20.04 LTS with XAMPP 7.4.11-0. I installed Wordpress 5.5 and was doing fine until some point.
Now I get 500 Internal Server Error. Apache starts ok. Wordpress doesn't work. My error_log looks like this, but nothing here is telling me where to begin the fix.
[Mon Nov 09 16:10:53.247964 2020] [suexec:notice] [pid 53431] AH01232: suEXEC mechanism enabled (wrapper: /opt/lampp/bin/suexec)
[Mon Nov 09 16:10:53.276573 2020] [lbmethod_heartbeat:notice] [pid 53432] AH02282: No slotmem from mod_heartmonitor
[Mon Nov 09 16:10:53.281975 2020] [mpm_prefork:notice] [pid 53432] AH00163: Apache/2.4.46 (Unix) OpenSSL/1.1.1h mod_perl/2.0.11 Perl/v5.32.0 configured -- resuming normal operations
[Mon Nov 09 16:10:53.282012 2020] [core:notice] [pid 53432] AH00094: Command line: '/opt/lampp/bin/httpd -E /opt/lampp/logs/error_log -D SSL -D PHP'