An internal error occurred during: “Updating Maven Project”. Unsupported IClasspathEntry kind=4

Question

As the title mentioned I have the following problem: I use Eclipse with Maven Nature and when I update my Maven Project, I get this error:

Answer 1

It helped in my case

rightclick project, remove maven nature mvn eclipse:clean (with project open in eclipse/STS) delete the project in eclipse (but do not delete the sources) Import existing Maven project