Hi I followed instructions for this by deleting the appropriate line of code and it made my site come down and locked me out of my WP back end!
Fortunately the site came back after 5 minutes automatically (not sure how)
This is so frustrating. I am not PHP proficient and it scared the life out of me.
As this seems a common error, surely you can devise an easy fix for this.
Can you please provide an easy solution for this which I can implement once my site is back up?