diff --git a/app/services/llm.py b/app/services/llm.py
index b13a670..520a374 100644
--- a/app/services/llm.py
+++ b/app/services/llm.py
@@ -213,7 +213,7 @@ Generate a script for a video, depending on the subject of the video.
 
     final_script = ""
     logger.info(f"subject: {video_subject}")
-    logger.debug(f"prompt: \n{prompt}")
+    # logger.debug(f"prompt: \n{prompt}")
     response = _generate_response(prompt=prompt)
 
     # Return the generated script
@@ -241,6 +241,10 @@ Generate a script for a video, depending on the subject of the video.
     else:
         logging.error("gpt returned an empty response")
 
+    # g4f may return an error message
+    if final_script and "当日额度已消耗完" in final_script:
+        raise ValueError(final_script)
+
     logger.success(f"completed: \n{final_script}")
     return final_script
 
@@ -273,7 +277,7 @@ Please note that you must use English for generating video search terms; Chinese
 """.strip()
 
     logger.info(f"subject: {video_subject}")
-    logger.debug(f"prompt: \n{prompt}")
+    # logger.debug(f"prompt: \n{prompt}")
     response = _generate_response(prompt)
     search_terms = []
 
diff --git a/app/services/task.py b/app/services/task.py
index 05fbc12..bcbc89c 100644
--- a/app/services/task.py
+++ b/app/services/task.py
@@ -78,7 +78,11 @@ def start(task_id, params: VideoParams):
     if sub_maker is None:
         sm.state.update_task(task_id, state=const.TASK_STATE_FAILED)
         logger.error(
-            "failed to generate audio, maybe the network is not available. if you are in China, please use a VPN.")
+            """failed to generate audio:
+1. check if the language of the voice matches the language of the video script.
+2. check if the network is available. If you are in China, it is recommended to use a VPN and enable the global traffic mode.
+        """.strip()
+        )
         return
 
     audio_duration = voice.get_audio_duration(sub_maker)
@@ -174,7 +178,6 @@ def start(task_id, params: VideoParams):
     sm.state.update_task(task_id, state=const.TASK_STATE_COMPLETE, progress=100, **kwargs)
     return kwargs
 
-
 # def start_test(task_id, params: VideoParams):
 #     print(f"start task {task_id} \n")
 #     time.sleep(5)
diff --git a/app/services/voice.py b/app/services/voice.py
index 5a9e597..5474fac 100644
--- a/app/services/voice.py
+++ b/app/services/voice.py
@@ -1023,7 +1023,6 @@ def parse_voice_name(name: str):
 
 def is_azure_v2_voice(voice_name: str):
     voice_name = parse_voice_name(voice_name)
-    print(voice_name)
     if voice_name.endswith("-V2"):
         return voice_name.replace("-V2", "").strip()
     return ""