http 500 error can't access site
beginning yesterday i started getting an http 500 error when trying to access my site.
Nothing was changed. Nothing upgraded. it just started happening.
XOOPS Version XOOPS 2.5.6
PHP Version 5.6.40
mySQL Version 5.5.60-MariaDB
Server API apache2handler
I figured out today I can access the backend by typing admin.php after the url
everything on the backend works and is visible
but index php is obviously not accessible because i get the error instead of seeing the site.
I tried Chrome, Firefox, Opera and Avast Secure Browser. all with the same result.
I cleared the caches, did a virus and malware scan, cleaned the registry, etc.
nothing seems to work. Is this my computer doing this or is it protector for some reason?
Anyone have any ideas?