Golang : package is not in GOROOT during compilation

Alright, just putting down here for my own future reference, in case of future encounter with this weird error message during compilation process.

package xxx is not in GOROOT

Basically the problem is caused by go modules. To fix this problem, first check your Golang's environment with go env to see if GO111MODULE=on

If yes, then set it to OFF.

If you're using a build script to compile your code. Remember to SET GO111MODULE=off

Before compiling, best to clean up the module cache by issuing this command.

go clean --modcache

Hope this helps and happy coding!

Reference :

https://dev.to/maelvls/why-is-go111module-everywhere-and-everything-about-go-modules-24k