Index page http 500 blank page OJS

Describe the issue or problem
OJS index page loading blank page and http 500 error.

Steps I took leading up to the issue
I Just opened the index page and the page is not loading. I keep getting a 500 http server error.

What application are you using?

Additional information
Fatal error : Uncaught Error: Call to a member function getOption() on null in /home/physiolo/^ Stack trace: #0 /home/physiolo/ content_64d9019528c359_72404053(Object(Smarty_Internal_Template)) #1 /home/physiolo/ Smarty_Template_Resource_Base->getRenderedTemplateCode(Object(Smarty_Internal_Template)) #2 /home/physiolo/ Smarty_Template_Compiled->render(Object(Smarty_Internal_Template)) #3 /home/physiolo/ Smarty_Internal_Template->render(false, 1) #4 /home/physiolo/ in /home/physiolo/^ on line 37