add len(audio_embeddings) > 0 judge

modeling_minicpmo.py

@@ -598,7 +598,8 @@ class MiniCPMO(MiniCPMOPreTrainedModel):
         elif self.training:
             for i in range(bs):
                 # dummy audio_embeddings
-                input_embeddings = input_embeddings + audio_embeddings[0].mean() * 0
+                if len(audio_embeddings)>0:
+                    input_embeddings = input_embeddings + audio_embeddings[0].mean() * 0
 
         return input_embeddings