Enhance app.py with error handling and logging

app.py

@@ -79,12 +79,12 @@ def generate_response(tokenizer, model, user_input):
 def main():
     apply_custom_css()
     
-    st.title("FDA NDA Submission Assistant")
-    st.write("Ask the model about submitting an NDA to the FDA.")
+    st.title("FDA Submissions Wizard")
+    st.write("I've Been Trained On Submissions To and Responses From FDA.")
     
     tokenizer, model = load_model()
     
-    user_input = st.text_input("Enter your question:", "What's the best way to submit an NDA to the FDA?")
+    user_input = st.text_input("Enter your question:", "How Do I Learn More About The FDA?")
     
     if st.button("Generate Response"):
         if user_input.strip() == "":
@@ -99,4 +99,4 @@ def main():
                 st.error(f"An error occurred: {e}")
 
 if __name__ == "__main__":
-    main()
+    main()