报错：
go: cloud.google.com/go@v0.41.0: Get "https://proxy.golang.org/cloud.google.com/go/@v/v0.41.0.mod": dial tcp 142.251.43.17:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
报错如上，大概就是安装依赖时从上述网址访问失败，一般是由于国内防火墙导致的，这个不可避免，所以可以用梯子，或者修改依赖获取的源，类似Python的换源，在cmd里面执行：
go env -w GOPROXY=https://goproxy.cn,direct完成之后，再执行go mod tidy就很快了~
