Update config.json

config.json

@@ -17,7 +17,7 @@
   "pad_token_id": 0,
   "position_embedding_type": "absolute",
   "transformers_version": "4.6.0.dev0",
-  "type_vocab_size": 9,
+  "type_vocab_size": 2,
   "use_cache": true,
   "vocab_size": 28996
 }