Using AEM 6.5 on CentOS.
I have a working form with a single field and button and some labels. I saved it, promoted it to pub. Works fine.
I committed my changes to githhub (via repo tool). This has worked fine for 2 months now.
My computer rebooted (blue screen), which made auth unusable. I rebuilt auth, deployed my packages to the new auth.
Now when I open the rules editor, I get the attached. (It won't open).
I debugged ExpressionEditorServiceImpl, and the file it's trying to parse is a JS in our app which has always worked and hasn't changed in weeks.