I have 3 Drupal 8 sites. 2 have premium themes and one is Bartik themed.
When I built the 2 the sites with premium themes in Ubuntu I could log in fine but when I log in to them when online (CentOS server) the sites crashes with the error:
The website encountered an unexpected error. Please try again later.
This doesn't happen with the Bartik site.
I wonder if I could debug the problem somehow with Drush or if there is anything else than
drush wd-show just to make sure I cover the most I can with it?
The only way I know to debug problems with drush is drush wd-show.
Is there any command that could help me understand why site logins fail on that particular environment?
Update - Error from Drush & Cpanel error log:
[Tue Jul 19 14:50:11.393827 2016] [:error] [pid 15721] [client 18.104.22.168:33948] Uncaught PHP Exception RuntimeException: "Failed to start the session because headers have already been sent by "/home/zantech0/public_html/yoursitename.com/themes/business/includes/skins-menu/skins_menu.inc" at line 2."
at /home/zantech0/public_html/yoursitename.com/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php line 140, referer: http://yoursitename.com/user/login
Head of the file: