I had set up a website a few years ago using D7, and recently when I tried to log in as admin to update details, all I get is a white screen with the "The website encountered an unexpected error. Please try again later" messge.
I hadn't just been installing anything, or done anything which seemed to precipitate this, and have no idea how to go about sourcing the cause of this.
Information provided on the site is now out of date, and I'm wondering if it's fixable, or if I need to nuke the installation and reinstall a clean version of Drupal or try a less finnicky CMS.