java.lang.NullPointerException: This exception has no message.

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can not build library

This exception has no message.

Error:Execution failed for task ':app:processDebugResources'. > at index 4

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NullPointerException in Plugin Android Support

This exception has no message.

java.lang.NullPointerException	at com.intellij.openapi.util.io.FileUtilRt.toSystemIndependentName(FileUtilRt.java:207)