500 Error days after IP Change

[SMen]

Suddenly receiving a 500 error on one site after a server IP address change. Production site only, Dev site is fine...

I can get into the Admin CP, but the site itself will not load.  I have disabled all applications and plugins, and switched to default theme.  Same issue.

At a loss of what issue is considering dev site (on same server) is fine.  Suggestions?

This seems to be the predominate error in logs:

Error: Class "IPS\Theme\Cache\class_core_front_global" not found (0)
#0 /var/www/vhosts/website.com/httpdocs/system/Theme/Theme.php(951): eval()
#1 /var/www/vhosts/website.com/httpdocs/system/Theme/Cache/Template.php(108): IPS\_Theme::overloadHooks()
#2 /var/www/vhosts/website.com/httpdocs/system/Theme/Theme.php(802): IPS\Theme\Cache\_Template->exists()
#3 /var/www/vhosts/website.com/httpdocs/system/Dispatcher/Dispatcher.php(173): IPS\_Theme->getTemplate()
#4 /var/www/vhosts/website.com/httpdocs/init.php(935) : eval()'d code(61): IPS\_Dispatcher->finish()
#5 /var/www/vhosts/website.com/httpdocs/system/Dispatcher/Standard.php(113): IPS\hook3137->finish()
#6 /var/www/vhosts/website.com/httpdocs/system/Dispatcher/Front.php(558): IPS\Dispatcher\_Standard->finish()
#7 /var/www/vhosts/website.com/httpdocs/system/Dispatcher/Dispatcher.php(155): IPS\Dispatcher\_Front->finish()
#8 /var/www/vhosts/website.com/httpdocs/index.php(13): IPS\_Dispatcher->run()
#9 {main}

#0 /var/www/vhosts/website.com/httpdocs/init.php(1037): IPS\_Log::log()
#1 [internal function]: IPS\IPS::exceptionHandler()
#2 {main}

[SMen]

Update:  It almost seems as something got corrupted perhaps?  If I change the default Front site and every user to the default IPS theme, then the site renders.  Set it to the IPSFocus theme and it fails, regardless of plugins or applications.  

Is there something in the DB I can check?

 

 

[SMen]

Update:  Seems it was the Light Theme that was somehow corrupted.  The Dark version was fine.

Created a new theme and deleted the old and all is working fine.  Only drawback is that members that had chosen the Dark theme will need to switch again.  But all working, and that is what matters!  Thank you to @Daniel F for checking in on the request I made in the wrong category,

 

[Marc Stridgen]

Glad to hear you have the issue resolved 🙂