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

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

Maven 报错。

 

15down vote

I just went to Properties -> Java Build Path -> Libraries and removed the blue entries starting with "M2_REPO". After that, I could use Maven -> Update Project again