You have JVM property “https.pro

Issues: gradle sync failed while downloading some required libs, and some proxy related errors occurred.

Open Http Proxy settings tab in preference window, got a alert msg: You have JVM property “https.proxyHost“ set to “127.0.0.1. This may lead to incorrect behaviour.

Ways to solve it: open file ~/.gradle/gradle.properties(on macos), then remove all the proxy related lines.