Update config.json

config.json

@@ -52,7 +52,7 @@
   "output_hidden_states": false,
   "output_past": true,
   "pad_token_id": 1,
-  "prefix": null,
+  "prefix": " ",
   "pruned_heads": {},
   "repetition_penalty": 1.0,
   "task_specific_params": null,
@@ -62,4 +62,4 @@
   "torchscript": false,
   "use_bfloat16": false,
   "vocab_size": 50264
-}
+}