sidebar fixes

app.py

@@ -46,10 +46,10 @@ def main():
     st.title("BetterZila RAG Enabled LLM")
     with st.spinner("Registering Models for use..."):
         prompter = register_gguf_model()
-    
-    # add a choice box for model selection to the sidebar   
-    model_name = st.sidebar.selectbox("Select Model", prompter.model_catalog.models)
+      
+    model_name = st.sidebar.selectbox("Select Model", ["llama", "open_gpt4", "phi2", "mistral"])
     with st.spinner("Loading model..."):
+        print(model_name)
         prompter.load_model(model_name)
 
     with st.spinner("Loading PDF content from the assignment URL..."):