g4f compatibility patch

fix-compatibility.patch

--- __init__.py	2023-10-15 01:34:31.374313986 +0200
+++ patched.py	2023-10-15 01:35:38.045133112 +0200
@@ -47,9 +47,9 @@
                 }
             ],
             "usage": {
-                "prompt_tokens": None,
-                "completion_tokens": None,
-                "total_tokens": None,
+                "prompt_tokens": 1,
+                "completion_tokens": 1,
+                "total_tokens": 1,
             },
         }