[agent-go] fix-bugs

agent-go/executor/CommandExecutor.go

@@ -63,6 +63,7 @@ func PipeLineCommandExecutor(pipeLineCommand [][]string) ([]string, error) {
 			prevCmd := cmds[i-1]
 			out, err := prevCmd.StdoutPipe()
 			if err != nil {
+				log.ErrorF("Pipeline command error happened! Command is => %v, Error is %v", partOfCommand, err)
 				return nil, err
 			}
 			cmd.Stdin = out