Fixed error message omission during Lab execution

[MathiasStokholm]

Fixed

• Fixed a bug where the actual error message from an exception happening during execution through a Lab instance would
  be omitted

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.27%. Comparing base (4596de6) to head (ceecd68).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop      #53   +/-   ##
========================================
  Coverage    91.27%   91.27%           
========================================
  Files           15       15           
  Lines         1204     1204           
========================================
  Hits          1099     1099           
  Misses         105      105           

Flag	Coverage Δ
unittests	91.27% <ø> (ø)

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