Merge remote-tracking branch 'origin/master' into debug

utils/common.go

@@ -323,7 +323,7 @@ func DownloadImage(imgUrl string) (filePath string, err error) {
 func DownloadFile(fileUrl, fileDir string) (filePath string, err error) {
 	filePathDir := "./static/imgs/"
 	if fileDir != `` {
-		err = os.MkdirAll(fileDir, utils.DIR_MOD)
+		err = os.MkdirAll(fileDir, DIR_MOD)
 		if err != nil {
 			return
 		}