Add space (#11373)

src/transformers/tokenization_utils_base.py

@@ -2579,7 +2579,7 @@ class PreTrainedTokenizerBase(SpecialTokensMixin):
         # The model's main input name, usually `input_ids`, has be passed for padding
         if self.model_input_names[0] not in encoded_inputs:
             raise ValueError(
-                "You should supply an encoding or a list of encodings to this method"
+                "You should supply an encoding or a list of encodings to this method "
                 f"that includes {self.model_input_names[0]}, but you provided {list(encoded_inputs.keys())}"
             )