art.py: handle errors gracefully

required for 2019 samsung models

samsungtvws/art.py

@@ -111,7 +111,7 @@ def _send_art_request(
         assert self.connection
         event: Optional[str] = None
         sub_event: Optional[str] = None
-        while event != wait_for_event:
+        while event != wait_for_event and event != 'error':
             data = self.connection.recv()
             response = helper.process_api_response(data)
             event = response.get("event", "*")
@@ -121,7 +121,7 @@ def _send_art_request(
                 # Check sub event, reset event if it doesn't match
                 data = json.loads(response["data"])
                 sub_event = data.get("event", "*")
-                if sub_event != wait_for_sub_event:
+                if sub_event != wait_for_sub_event and sub_event != 'error':
                     event = None
 
         return response
@@ -234,6 +234,9 @@ def upload(self, file, matte="shadowbox_polar", file_type="png", date=None):
         )
         assert response
         data = json.loads(response["data"])
+        if data['event'] == 'error':
+            raise RuntimeError("Upload failed with error number %s" % data["error_code"])
+
         conn_info = json.loads(data["conn_info"])
 
         header = json.dumps(