An internal error occurred during: "Importing Maven projects" Unsupported IClas

An internal error occurred during: "Importing Maven projects". Unsupported IClas

eclipse导入Maven项目报错：
An internal error occurred during: "Importing Maven projects". Unsupported IClasspathEntry kind=4


   1. Right-click on your project, select Maven -> Remove Maven Nature.
   2.Open you terminal, go to your project folder and do “mvn eclipse:clean”
   3.Right click on your Project and select “Configure -> Convert into Maven Project”

also delete project from eclipse. and run:
mvn eclipse:clean
then import project again.