diff --git a/Dockerfile b/Dockerfile
index 7ee3c6f1f..c217ad7a7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,13 +19,12 @@ RUN apt update && \
     apt install -y ffmpeg && \
     pip install pdm
 
-VOLUME ["/redis", "/rabbitmq", "/mongodb", "/run.log", "/config_dir"]
+VOLUME ["/redis", "/rabbitmq", "/mongodb", "/run.log", ".cache",".montydb",".snapshot"]
 
 WORKDIR /app
 COPY --from=builder /project/.venv /app/.venv
 
 COPY pm2.json ./
-COPY config_dir ./config_dir
 COPY . /app
 
 CMD [ "pm2-runtime", "pm2.json" ]
diff --git a/llmkira/extra/voice/__init__.py b/llmkira/extra/voice/__init__.py
index 5fa269113..3ce6893c3 100644
--- a/llmkira/extra/voice/__init__.py
+++ b/llmkira/extra/voice/__init__.py
@@ -1,6 +1,7 @@
 import base64
 import json
 from io import BytesIO
+from typing import Optional
 
 import aiohttp
 import edge_tts
@@ -49,7 +50,8 @@ def get_audio_bytes_from_data_url(data_url):
         audio_base64 = data_url.split(",")[1]
         audio_bytes = base64.b64decode(audio_base64)
         return audio_bytes
-    except Exception:
+    except Exception as e:
+        logger.warning(f"Failed to extract audio bytes: {e}")
         return None
 
 
@@ -143,7 +145,7 @@ async def request_novelai_speech(text):
         return None
 
 
-async def request_cn(text, reecho_api_key: str = None):
+async def request_cn(text, reecho_api_key: str = None) -> Optional[bytes]:
     """
     Call the Reecho endpoint to generate synthesized voice.
     :param text: The text to synthesize
@@ -156,9 +158,10 @@ async def request_cn(text, reecho_api_key: str = None):
         stt = await request_reecho_speech(text, reecho_api_key)
         if not stt:
             return await request_dui_speech(text)
+        return stt
 
 
-async def request_en(text):
+async def request_en(text) -> Optional[bytes]:
     """
     Call the Reecho endpoint to generate synthesized voice.
     :param text: The text to synthesize