Down After Upgrade - Appears to be login handler

[ADKGamers]

4 hours ago, Marc Stridgen said:

Topics would be left generally to help others. In the case of this one, the issue is a 3rd party steam item.

What about these errors that I'm getting in the error log? 

 

#0 /home/XXXXXXXXXXX/public_html/init.php(1050): IPS\IPS::genericExceptionPage('No such file or...')
#1 [internal function]: IPS\IPS::exceptionHandler(Object(IPS\Db\Exception))
#2 {main}
  thrown in /home/XXXXXXXXXXX/public_html/init.php on line 1122
[18-Dec-2021 02:17:00 UTC] PHP Fatal error:  Uncaught Error: Call to undefined method IPS\Output::getNoCacheHeaders() in /home/adkgamer/public_html/init.php:1122
Stack trace:
#0 /home/XXXXXXXXXXX/public_html/init.php(1050): IPS\IPS::genericExceptionPage('No such file or...')
#1 [internal function]: IPS\IPS::exceptionHandler(Object(IPS\Db\Exception))
#2 {main}
  thrown in /home/XXXXXXXXXXX/public_html/init.php on line 1122

And with understanding that it's possibly the login handler causing the overall issue, is there a way that I can disable everything about the login handler through the database? 

Edited December 20, 2021 by ADKGamers

[Marc Stridgen]

I have split this into a new topic. It looks like the init.php file may be out of date. Please upload a fresh set of files from your client area first of all, and see if this resolves your issue

[Marc Stridgen]

Did that resolve the problem?