[BUG]golang环境是否有要求？1.15 不能运行

        github.com/apolloconfig/agollo/v4 imports
        github.com/apolloconfig/agollo/v4/utils/parse/yaml imports
        github.com/spf13/viper imports
        github.com/spf13/afero tested by
        github.com/spf13/afero.test imports
        testing/fstest: package testing/fstest is not in GOROOT (C:\go1158\src\testing\fstest)

使用go mod 管理之后提示这个错误

go version 1.15.8
agollo version v4.0.9