An internal error occurred during: “Importing Maven projects“.Path for project must have only one s

An internal error occurred during: "Importing Maven projects".
Path for project must have only one segment.

去别的项目找了文件复制过来,有时候也不行

换个开发工具导入,同样都是eclipse,用高版本可以导入,问题在哪里??结构差异在哪里?