Is my javascript install working as expected?

[rossko57]

@ariznaf

But there seems to be to kind of javascript engines

Yes, you’ve got it.

See

All my ECMAScript scripts stopped working throwing exceptions

Which ECMAScript engine? There is the default ECMAScript 5.1 which comes with openHAB and there is the GraalVM JavaScript add-on you can install separately. The two are not the same and rules written in one are not compatible with the other. When you do install the GraalVM add-on, for some reason it breaks the built in JavaScript right now (I’ve opened an issue but it’s not gained traction yet) so if you do install the add-on, you must only use that for your rules. It’s clear from the error tha…