I have a strange Kotlin/Intellj problem: Kotlin co...

# intellij

[nkiesel]

I have a strange Kotlin/Intellj problem: Kotlin complains that javax.xml.XMLConstants.NULL_NS_URI is an unresolved reference, but javax.xml.XMLConstants.XML_NS_URI works fine. Compiling from command line works for both. Any ideas?

[yole]

nkiesel: try File | Invalidate Caches?

[nkiesel]

tried, but did not help. feels like intellj uses another (older?) version of some jars. Besides XMLConstants it also complains about org.w3c.dom.Node.textContent. Just to clarify: IDE does not flag this as a bug (no red swiggle underline), but e.g. trying to run unit test code complains during build

[nkiesel]

so feels like I misconfigured something. But I started at it for hours and can't see what I did wrong