fix downloaders

app/modules/transmission/transmission.py

@@ -22,10 +22,13 @@ class Transmission:
               "peersGettingFromUs", "peersSendingToUs", "uploadRatio", "uploadedEver", "downloadedEver", "downloadDir",
               "error", "errorString", "doneDate", "queuePosition", "activityDate", "trackers"]
 
-    def __init__(self, host: str = None, port: int = None, username: str = None, password: str = None):
+    def __init__(self, host: str, port: int, username: str = None, password: str = None, **kwargs):
         """
         若不设置参数，则创建配置文件设置的下载器
         """
+        if not host or not port:
+            logger.error("Transmission配置不完整！")
+            return
         self._host = host
         self._port = port
         self._username = username