Handle empty values during config upgrade. Fix #15362
The config may have an empty string - use 'empty()' instead of'isset()' since '0' is not valid in this case.
Added by Marcos M about 1 year ago
Handle empty values during config upgrade. Fix #15362
The config may have an empty string - use 'empty()' instead of
'isset()' since '0' is not valid in this case.