I am unable to access the Civi administrator section on a website using Joomla 3.7.5, Civi 4.7.23 and running on PhP 7.0. Joomla portion works fine, but when I access Components/Civicrm from the Joomla backend, I get a blank page with no error messages (although Joomla debugging is turned on). Using Firefox Developer edition's debugger the response is "Page has no sources".
Since I can't login to change settings to display all errors and turn on backtrace, how do I troubleshoot? Any help would be appreciated.
Fatal error: Uncaught CRM_Core_Exception: [0: Transaction integrity error: Expected to find active frame thrown in /home/sherida1/public_html/jgs-live/administrator/components/com_civicrm/civicrm/Civi/Core/Transaction/Manager.php on line 107