Update stt_google.py

stt_google.py

@@ -131,7 +131,15 @@ class GoogleCloudSTT(STTInterface):
                         log_debug(f"📝 STT result: {result.alternatives[0].transcript}, final: {result.is_final}")
                         
         except Exception as e:
-            log_error(f"❌ Google STT stream error", error=str(e))
+            error_msg = str(e)
+            log_error(f"❌ Google STT stream error", error=error_msg)
+            
+            # Send error to responses queue
+            if "Bad language code" in error_msg:
+                log_error(f"❌ Invalid language code in STT config. Check locale settings.")
+            elif "invalid_argument" in error_msg:
+                log_error(f"❌ Invalid STT configuration. Check encoding and sample rate.")
+                
         finally:
             log_info("🎤 Google STT stream thread ended")