cannot find package "github.com/gorilla/mux" in any of:

I wish this helpful. You may off the 'mod'.

$ export GO111MODULE=off

Could you try this steps to debug it:

ls -l /usr/local/go/src/github.com | grep gorilla
cd $GOPATH

go list ... | grep gorilla
if you din't see gorilla in the above two command, then you need to install it: go get -v -u github.com/gorilla/mux

Please run this: export PATH=$PATH:$GOPATH/bin

How about running go run main.go ? is that working, if yes you should be able to do go build from your project path.

Related