新导入项目报这个错误:
Error:Could not find com.android.tools.build:gradle-core:2.3.3.
Searched in the following locations:
https://repo1.maven.org/maven2/com/android/tools/build/gradle-core/2.3.3/gradle-core-2.3.3.pom
https://repo1.maven.org/maven2/com/android/tools/build/gradle-core/2.3.3/gradle-core-2.3.3.jar
Required by:
project :library > com.android.tools.build:gradle:2.3.3。
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