Upload processing_song2midi.py

processing_song2midi.py

@@ -60,6 +60,9 @@ class Song2MIDIProcessor(ProcessorMixin):
             attribute = getattr(self, attribute_name, None)
             input_data, input_kwargs = attribute_to_kwargs[attribute_name]
             if input_data is not None and attribute is not None:
+                if attribute_name == "midi_tokenizer":
+                    # Change the None to empty string to avoid errors in tokenizers when trying to tokenize None.
+                    input_data = input_data if input_data is not None else ""
                 attribute_output = attribute(input_data, **kwargs[input_kwargs])
                 outputs[attribute_name] = attribute_output