Fix JSONLogger with constraints

[till-m]

Partial fix for #361.

[codecov-commenter]

Codecov Report

Base: 99.25% // Head: 99.25% // No change to project coverage 👍

Coverage data is based on head (67a7a49) compared to base (a3021cc).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #364   +/-   ##
=======================================
  Coverage   99.25%   99.25%           
=======================================
  Files           8        8           
  Lines         535      535           
  Branches       81       81           
=======================================
  Hits          531      531           
  Misses          2        2           
  Partials        2        2           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[bwheelz36]

thanks!