handled the HFToken Not Found Error

app.py

@@ -71,8 +71,12 @@ with st.expander("About This App"):
     """)
 
 # Code to upload the trained model to Hugging Face using huggingface_hub
-hf_token = os.getenv("HF_TOKEN")
-repo_id = "wvsu-dti-aidev-team/advertising_knn_regressor_model"
+try:
+    hf_token = os.getenv("HF_TOKEN")
+    repo_id = "wvsu-dti-aidev-team/advertising_knn_regressor_model"
+except Exception as e:
+    st.error(f"Error: {e}")
+    st.stop()
 
 api = HfApi()
 api.upload_file(