Update voice_chat.py

voice_chat.py

@@ -10,6 +10,7 @@ import sentencepiece as spm
 import onnxruntime as ort
 from huggingface_hub import hf_hub_download, InferenceClient
 from dotenv import load_dotenv
+import os 
 
 # Speech Recognition Model Configuration
 model_name = "neongeckocom/stt_en_citrinet_512_gamma_0_25"