typo (#313)

Author: MarkDaoust

google/generativeai/generative_models.py

@@ -706,7 +706,7 @@ def history(self) -> list[glm.Content]:
 
         if last._error is not None:
             raise generation_types.BrokenResponseError(
-                "Can not build a coherent char history after a broken "
+                "Can not build a coherent chat history after a broken "
                 "streaming response "
                 "(See the previous Exception fro details). "
                 "To inspect the last response object, use `chat.last`."