idea报错Module Project1 must not contain source root "...\Project1\src". The root already belongs to .

• idea报错Module Project1 must not contain source root “…\Project1\src”. The root already belongs to m
  
  选择你的根模块
  
  选择modules，选择根模块，删除add content root 下面不直接属于根模块的目录即可。