Hi All contributors, please be advised. I am using this PR[1] to merge RocketBot as primary UI. In there, I need to update submodule. So all contributors, you need to - Delete the local ui submodule cache. Update again OR - Git clone again.
[1]https://github.com/apache/skywalking/pull/2515 Sheng Wu 吴晟 Apache SkyWalking, ShardingSphere, Zipkin Twitter, wusheng1108
