I have a wordpress plugin that has been working for months without any problems, suddenly stop working. There have been no plugins updated and wp has not been updated since it was last working (yesterday).
http://www.mysite.com/wp-admin/admin-ajax.php 500 (Internal Server Error) jquery.js?ver=1.11.1:1
I looked in my httpd/error_log and don't find any errors there.
No php errors are showing.
Any suggestions on how to troubleshoot this?