I tried to run the rocket chat app in my android studio 3.2 -beta 1 , but got the below error. How can i solve this issue?

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Could not GET ‘https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.0-beta02/gradle-3.2.0-beta02.pom’. Received status code 407 from server: Proxy Authorization Required
Enable Gradle ‘offline mode’ and sync project