finding out what is causing dreaded “The website encountered an unexpected error. Please try again later.” message

Question

while doing a drupal 6 to 7 upgrade I am getting the not so helpful message \"The website encountered an unexpected error. Please try again later.\" everytime I go to certa

Answer 1

Am replying on 8 years old thread. But wanted to share my inputs to fix this error. I am using Drupal 8.*

I faced the same error when I tried to clear the cache (From performance). I tried several things mentioned in most of the blogs or drupal help.

In the end I came to know that, there was some YML formatting issue in my Drupal 8 theme files. I removed tabs and validated my YML files from online YML validator.