Update app.py

app.py

@@ -44,7 +44,8 @@ def ask_question_from_pdf(pdf_text, user_question, api_key):
     # Collect the streamed response.
     answer = ""
     for chunk in stream:
-        answer += chunk.choices[0].delta.content
+        if chunk.choices[0].delta.content:  # Ensure content is not None
+            answer += chunk.choices[0].delta.content
     return answer
 
 # Streamlit app
@@ -66,9 +67,12 @@ if uploaded_file is not None:
 
     if st.button("Get Answer") and user_question and api_key:
         with st.spinner("Fetching the answer..."):
-            answer = ask_question_from_pdf(pdf_text, user_question, api_key)
-        st.success("Answer fetched!")
-        st.write("**Answer:**", answer)
+            try:
+                answer = ask_question_from_pdf(pdf_text, user_question, api_key)
+                st.success("Answer fetched!")
+                st.write("**Answer:**", answer)
+            except Exception as e:
+                st.error(f"An error occurred: {e}")
     elif not api_key:
         st.error("Please provide a valid Groq API key.")
     elif not user_question: