Test Locally First
Before you upload the files, you can test on your own computer first. Open the Terminal or Command Prompt and type these two lines. You compile it with “go build” and start the local server with "./main"
go build ./main
Then you open your browser and type the url and port separated by colon. 127.0.0.1 is always localhost or your own computer
127.0.0.1:5050 <--- or which port the server is working against