Update app.py

app.py

@@ -4,8 +4,13 @@ from transformers import pipeline, WhisperProcessor, WhisperForConditionalGenera
 from huggingface_hub import login
 import os
 
-# Authenticate with Hugging Face
+# Retrieve the token from the environment variable
 hf_api_token = os.getenv("HF_API_TOKEN")
+
+if hf_api_token is None:
+    raise ValueError("HF_API_TOKEN environment variable is not set")
+
+# Authenticate with Hugging Face
 login(token=hf_api_token, add_to_git_credential=True)
 
 # Initialize the Whisper processor and model