Groovy to JSON script error

[finglis]

Bug report

Describe the bug
Error produced when groovy script is converted to JSON

To Reproduce
Steps to reproduce the behavior:

1. Open specific groovy script in qupath
2. Change the script to JSON via Language dropdown
3. Will produce an error.

Expected behavior
No error, script changes to JSON

Screenshots

Desktop (please complete the following information):
Confirmed on Windows and Mac, both v0.4.3 QuPath

Additional context
See txt for error output. Original groovy script being kept private.
groovy to json script error.txt

[petebankhead]

Adding link back to original discussion: https://forum.image.sc/t/potential-bug-with-load-pixel-classifier-show-as-text-qupath-v0-4-3/80470

Haven't figured out exactly what aspect of the script is troublesome, so haven't come up with a proper minimal non-working example yet :/

Even without that, we can assume that a proper solution involved removing use of regex from the styler classes... or at least handling styling errors more quietly, without having an exception pop up.

[petebankhead]

I attempted to replicate this as a 'quickly fixable' bug.... but couldn't.