Found The following exception while working in proxy mode.

FAILURE: Build failed with an exception. What went wrong: A problem occurred configuring root project ‘library’. > Could not resolve all dependencies for configuration ‘:classpath’. > Could not download commons-lang3.jar (org.apache.commons:commons-lang3:3.1) > Failed to download SHA1 for resource ‘https://repo.cuba-platform.com/content/groups/work/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar’. > Could not GET ‘https://repo.cuba-platform.com/content/groups/work/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar.sha1’. Received status code 407 from server: Proxy Authentication Required Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. [09:09:09.337] Exception has been thrown by com.haulmont.studio.backend.A@6a4929e0:
[09:09:09.339] org.gradle.api.UncheckedIOException: Could not GET ‘https://repo.cuba-platform.com/content/groups/work/org/apache/commons/commons-lang3/3.1/commons-lang3-3.1.jar.sha1’. Received status code 407 from server: Proxy Authentication Required
at org.gradle.internal.resource.transport.http.HttpClientHelper.processResponse(HttpClientHelper.java:112)
at org.gradle.internal.resource.transport.http.HttpClientHelper.performGet(HttpClientHelper.java:62)
at org.gradle.internal.resource.transport.http.HttpResourceAccessor.openResource(HttpResourceAccessor.java:51)

already setup set STUDIO_OPTS="-Djava.net.useSystemProxies=true" in studio.bat file.

experts , please guide me …

hi , update from myself . after setup proxy in gradle in user home , the issue had been resolved.