GO build can't find package

trying to build go project using “go build main.go” fails with the below error. verified the $GOPATH (C:\Users\mbhoompa\go) and $GOROOT (C:\Go). Looks like its trying to append $GOPATH twice…any thoughts?

config\config.go:4:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/github.com/BurntSushi/toml” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\BurntSushi\toml (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\BurntSushi\toml (from $GOPATH)
handler\handler.go:5:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/github.com/go-chi/chi” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\go-chi\chi (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\go-chi\chi (from $GOPATH)
db2api\DB2Service.pb.go:6:8: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/github.com/golang/protobuf/proto” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\golang\protobuf\proto (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\golang\protobuf\proto (from $GOPATH)
log\logger.go:4:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/github.com/natefinch/lumberjack” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\natefinch\lumberjack (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\natefinch\lumberjack (from $GOPATH)
grpcdb2apiclient\db2apiclient.go:4:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/github.com/pkg/errors” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\pkg\errors (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\pkg\errors (from $GOPATH)
handler\file-transfer.go:6:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/github.com/pkg/sftp” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\pkg\sftp (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\github.com\pkg\sftp (from $GOPATH)
log\logger.go:5:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/go.uber.org/zap” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\go.uber.org\zap (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\go.uber.org\zap (from $GOPATH)
log\logger.go:6:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/go.uber.org/zap/zapcore” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\go.uber.org\zap\zapcore (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\go.uber.org\zap\zapcore (from $GOPATH)
handler\file-transfer.go:8:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/golang.org/x/crypto/ssh” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\golang.org\x\crypto\ssh (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\golang.org\x\crypto\ssh (from $GOPATH)
db2api\DB2Service.pb.go:11:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/golang.org/x/net/context” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\golang.org\x\net\context (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\golang.org\x\net\context (from $GOPATH)
db2api\DB2Service.pb.go:12:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/google.golang.org/grpc” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\google.golang.org\grpc (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\google.golang.org\grpc (from $GOPATH)
handler\grpc-server.go:5:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/google.golang.org/grpc/codes” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\google.golang.org\grpc\codes (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\google.golang.org\grpc\codes (from $GOPATH)
handler\grpc-server.go:6:2: cannot find package “/C/Users/mbhoompa/go/src/sftp/vendor/google.golang.org/grpc/status” in any of:
C:\Go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\google.golang.org\grpc\status (from $GOROOT)
C:\Users\mbhoompa\go\src_\C_\Users\mbhoompa\go\src\sftp\vendor\google.golang.org\grpc\status (from $GOPATH)