更新Android Studio后打开Project，报如下错误：
Error:A problem occurred configuring root project 'CallPolice'.
> Could not resolve all files for configuration ':classpath'.> Could not find com.android.tools.build:gradle:3.3.
Searched in the following locations:
file:/D:/Program Files/Android/Android Studio/gradle/m2repository/com/android/tools/build/gradle/3.3/gradle-3.3.pom
file:/D:/Program Files/Android/Android Studio/gradle/m2repository/com/android/tools/build/gradle/3.3/gradle-3.3.jar
https://jcenter.bintray.com/com/android/tools/build/gradle/3.3/gradle-3.3.pom
https://jcenter.bintray.com/com/android/tools/build/gradle/3.3/gradle-3.3.jar
Required by:
project :
1、查看Android Studio安装目录
2、在项目app下的build.gradle文件内
修改成Android Studio安装目录有的版本，编译就OK