Go1.13:使用go mod 管理依赖 提示cannot find module providing package或cannot find main mod

问题现象 编译go程序的时候报错: GOROOT=D:\go\GoSDK #gosetup GOPATH=D:\hc\workspace\fly\go\src\github.com\learngo;D:\hc\workspace\fly\go #gosetup D:\go\GoSDK\bin\go.exe build -o C:\Users\FLY\AppData\Local\Temp\___go_build_github_com_learngo_basic_basic.exe github.com/learngo/basic/basic #gosetup can't load packag