Error displaying the error page: Application Instantiation Error: Failed to start the session because headers have already been sent by "/home/csbsusa/public_html/wildfarm/libraries/cms.php" at line 59.
I have almost a dozen joomla sites. Most using Akeeba Admin Tools Pro, and I am using the HTAccess maker. After my upgrade to Joomla 3.7.0, I tested every site, no problem. I then went back to SiteGround and upgraded to PHP 7.0.18 and at least one site using HTAccess won't let me into the Joomla Admin with the error code above. The live site seems fine, although I haven't thoroughly tested it. I go back into SiteGround, revert back to PHP 5.6.30 and everything works again. Please advise.
https://wildfarmlands.org is the site throwing the backend error. I'll get you Admin credentials if you need it.
Cheers,
Ed