Fixing a typo and a bug in the error handling.

gepetto.py

@@ -74,12 +74,11 @@ class GepettoHandler(idaapi.action_handler_t):
     def __init__(self):
         idaapi.action_handler_t.__init__(self)
 
-    # Say hello when invoked.
     def activate(self, ctx):
         decompiler_output = ida_hexrays.decompile(idaapi.get_screen_ea())
         v = ida_hexrays.get_widget_vdui(ctx.widget)
         query_chatgpt_async("Can you explain what the following C function does?\n" + str(decompiler_output) +
-                            "\nSuggest better name for the function and its arguments.",
+                            "\nSuggest better names for the function and its arguments.",
                             functools.partial(comment_callback, address=idaapi.get_screen_ea(), view=v))
         return 1
 
@@ -117,7 +116,7 @@ def query_chatgpt(query, cb):
             presence_penalty=1
         )
         cb(response=response.choices[0].text)
-    except openai.error as e:
+    except openai.OpenAIError as e:
         raise print(f"ChatGPT could not complete the request: {str(e)}")