OHIF V3 MONAI Plugin: cannot change label color

[AHarouni]

Describe the bug Clicking on the label color to change the label color gives error

Server logs

To Reproduce 1- Add any label 2- click label color to change it 3- clicking save will not work

Expected behavior label color should change

@sedghi @diazandr3s @tangy5

[sedghi]

I can't reproduce it on latest master branch, maybe try there since that is not related to MOANI?

https://viewer-dev.ohif.org/segmentation?StudyInstanceUIDs=2.16.840.1.114362.1.11972228.22789312658.616067305.306.2