Before spending time diagnosing.
CHECK OUR ANNOUNCEMENTS
Client Area > Announcements and Network Issues.
If your server is listed, we are already working on it.
Your welcome email and cPanel both show which server your account is on.
CHECK THE APPLICATION'S RELEASE NOTES
A recently released version frequently has known problems, documented by the developer.
If the error started immediately after an update, check whether others reported it.
CHECK THE PLUGIN OR THEME SUPPORT FORUM
Recent threads frequently describe exactly your problem, with a fix or a workaround.
SEARCH THE EXACT ERROR
The literal string, in quotes. Not a description.
For a widely used application, someone has almost certainly encountered it.
WHAT TO BE CAREFUL OF
Advice from years ago, which may no longer apply Solutions involving 777 permissions, which are never correct Solutions telling you to edit core files
WHEN TO STOP SEARCHING
If twenty minutes produces nothing relevant, open a ticket. We may recognise it immediately.