Update app.py

app.py

@@ -51,12 +51,14 @@ if st.session_state['pre_url'] != url:
     st.session_state['pre_url'] = url
 
 # Step 2: Request for analysis or chart
-request = st.text_input(
-    "Enter your analysis request:",
-    "Plot a histogram about the distribution of agree, disagree and neutral comments against the topic")
+with st.form('Analyze'):
+    request = st.text_input(
+        "Enter your analysis request:",
+        "Plot a histogram about the distribution of agree, disagree and neutral comments against the topic")
+    submit_button = st.form_submit_button(label="Analyze")
 
 # Execute chat and display results
-if st.button("Analyze"):
+if submit_button:
     if st.session_state['agent'] is not None:
         file = st.session_state['agent'].chat(request)
         if os.path.exists(file):