log to Stderr

config.go

@@ -262,7 +262,7 @@ func parseConfig(appConfigPath string) (err error) {
 	for adaptor, config := range BConfig.Log.Outputs {
 		err = logs.SetLogger(adaptor, config)
 		if err != nil {
-			fmt.Printf("%s with the config `%s` got err:%s\n", adaptor, config, err)
+			fmt.Fprintln(os.Stderr, "%s with the config `%s` got err:%s\n", adaptor, config, err)
 		}
 	}
 	logs.SetLogFuncCall(BConfig.Log.FileLineNum)