refactor: add ftp error

src/errors/standard-error.ts

@@ -17,6 +17,7 @@ enum ErrorType {
   SONG_NOT_FOUND,
   INPUT_DATA_NOT_VALID,
   INVALID_API_KEY,
+  FILE_NOT_VALID,
 }
 
 class StandardError {
@@ -106,6 +107,11 @@ class StandardError {
         this.status = StatusCodes.UNAUTHORIZED;
         break;
 
+      case ErrorType.FILE_NOT_VALID:
+        this.title = "Your File is invalid."
+        this.status = StatusCodes.BAD_REQUEST;
+        break;
+
       default:
         this.title = "Unknown error.";
         this.status = StatusCodes.INTERNAL_SERVER_ERROR;