fhdsl/FH_WDL101_Cromwell

add some help to interpret mystery errors

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a suggestion for this spot, or nearby

as a new user who makes mistakes, I keep getting a mystery error (see suggestion here). "Error: An error has occurred. Check your logs or contact the app author for clarification".

it's because I don't have an active database connection.

maybe you'll figure out a way to make the error more informative (that would be great), or maybe it's fine to just help us out in the tutorial. Something like 'don't panic if you see this, you probably just need to re-connect to the server'