IDEA Error:svn: E195016: Merge tracking not allowed with missing subtrees

原因：

使用IDEA SVN将分支代码合并到主干时，报如下错误

Error:svn: E195016: Merge tracking not allowed with missing subtrees; try restoring these items first:
Changelist(s) :
xxx (***) merging faced problems
Skipped changelists: xxx (***) 

参考：

https://youtrack.jetbrains.com/issue/IDEA-125955

解决：

将Version Control -> Local Changes -> Locally Deleted中的变更还原或删除