fix!

api.py

@@ -208,6 +208,8 @@ async def process_audio(audio_data: bytes, language: str = "auto") -> str:
         # Convert to mono channel
         if waveform.shape[0] > 1:
             waveform = waveform.mean(dim=0)
+        else:
+            waveform = np.squeeze(waveform)
         print(2, waveform.shape)
         
         # Convert to numpy array and normalize