fix main.py

app/main.py

@@ -2,6 +2,7 @@ from fastapi import FastAPI, WebSocket
 from fastapi.staticfiles import StaticFiles
 from fastapi.responses import HTMLResponse
 from app.asr_worker import create_recognizer, stream_audio, finalize_stream
+import json
 
 app = FastAPI()
 
@@ -31,8 +32,8 @@ async def websocket_endpoint(websocket: WebSocket):
                 config_msg = None
                 try:
                     config_msg = json.loads(raw)
-                except Exception:
-                    pass
+                except Exception as e:
+                    print(f'Error: {e}')
                 if config_msg and config_msg.get("type") == "config":
                     orig_sr = int(config_msg["sampleRate"])
                     print(f"[INFO] Set original sample rate to {orig_sr}")