Gradle Sync fails in Android studio 1.3

Recently I updated Android studio to version 1.3, and then it fails gradle sync. Error message is something like,

Error:(30, 13) Failed to resolve: com.squareup.picasso:picasso:2.5.2
Show in File
Show in Project Structure dialog

It seems that https proxy server was not working correctly, even if I’m setting proxy server in [File] → [Settings…] → [Appearance & Behavior] → [HTTP Proxy]. 


 You can set http proxy server & https proxy server manually in file. Add below to your (Project Properties) file.

Replace with IP address of your proxy server & 8080 with your proxy’s port number.

After that, try [Build] → [Clean Project] to re-execute Gradle Sync.


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