Update modeling_minicpmv.py

modeling_minicpmv.py

@@ -394,9 +394,7 @@ class MiniCPMV(MiniCPMVPreTrainedModel):
             for i, msg in enumerate(copy_msgs):
                 role = msg["role"]
                 content = msg["content"]
-                assert role in ["user", "assistant"]
-                if i == 0:
-                    assert role == "user", "The role of first msg should be user"
+                assert role in ["system", "user", "assistant"]
                 if isinstance(content, str):
                     content = [content]
                 cur_msgs = []