AS错误解决 Unable to resolve dependency for ‘:app@debug/compileClasspath‘: Could not find any version。。。

 

错误提示：
 
Unable to resolve dependency for ':app@debug/compileClasspath': Could not find any version that matches com.android.support:appcompat-v7:29.+.
 
Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not find any version that matches com.android.support:appcompat-v7:29.+.
 
Unable to resolve dependency for ':app@debugUnitTest/compileClasspath': Could not find any version that matches com.android.support:appcompat-v7:29.+.

https://blog.csdn.net/belvine/article/details/105107645