Update modeling_apex.py

modeling_apex.py

@@ -63,6 +63,13 @@ class APEXModel(PreTrainedModel):
     _keys_to_ignore_on_load_missing = [r"mert\..*", r"mert_processor\..*"]
     _tied_weights_keys              = []
 
+    @property
+    def all_tied_weights_keys(self):
+        return []
+
+    def _init_weights(self, module):
+        pass
+        
     def __init__(self, config: APEXConfig):
         super().__init__(config)