Paper in Review link goes to "This page isn't working error"

When the author clicks on “Paper in Review” under ‘status’ in the Author section the link redirects the author to a page that says “HTTP Error 500 this page isn’t working”. The link to this page looks like this:
http://www.Conference.org/conference/index.php/conference/2018-conference/author/submissionReview/147
How does one fix this? The OCS is the latest 2.3.6. This also happens on another conference page I manage.

Hi @Devon_Hansen,

Check your PHP error log for details; a 500 error should always correspond to a message there with more information.

Regards,
Alec Smecher
Public Knowledge Project Team

So this is the error I receive now when clicking on the link:
Fatal error: Call to a member function getCurrentStage() on null in /usr/www/users/rapdancxex/conference/pages/author/TrackSubmissionHandler.inc.php on line 163

Hi @Devon_Hansen,

This change should correct the issue.

Regards,
Alec Smecher
Public Knowledge Project Team