我用android studio编程 程序没报错，但却运行不了
错误如下：
Error:Execution failed for task ':app:mergeDebugResources'.
> E:\work\NewTest\app\src\main\res\values\dimens.xml: Error: In DataSet 'main', no data file for changedFile. This is an internal error in the incremental builds code; to work around it, try doing a full clean build.
该怎么办？