I have Drupal 7 on Krystal Hosting, with CiviCRM v5.9 and trying to upgrade to v5.16. I've followed the upgrade steps on the docs.civicrm.org site and got to the step where it says,
"Or, point your web browser to the following URL and follow the on-screen instructions.
I've tried replacing "example.org" with my site address but just getting page not found.
I've checked I'm logged into Drupal as an admin. Only difference in address bar is text after site is ?=civicrm/upgrade?reset=1 instead of just /civicrm/upgrade?reset=1. When I click to go into Civicrm after extracting/installing 5.16, I get "Website encountered unexpected error" so I can't get to CiviCRM >> Admin >> System Status. Are there error logs anywhere with anything more helpful than "unexpected error" ?
Any help would be appreciated.