暂存第二代标准应用程序:捆绑失败

I am having a problem while trying to deploy Go project to Google App Engine (Standard Environment). When trying to run gcloud app deploy, all of the .go files get copied to the bucket, but after that I get an error:

 Staging second-gen Standard app: failed to bundle to c:\users\user\appdata\local\temp\tmprhpsm3\tmp6w7zeo: unable to copy directory ..\framework to _gopath\framework: unable to read dir "..\\framework": open ..\framework: The system cannot find the file specified.

Where framework represents local package name. It seems to be an issue with package imports, and I can't find a way to resolve it.

Any help would be much appreciated!

EDIT

The issue was somehow resolved on its own. I did some corrections to the GOPATH, but the final solution worked with the default GOPATH value.