Update app.py

app.py

@@ -151,17 +151,19 @@ if "logs" not in st.session_state:
 
 with col1:
     if st.button("Submit"):
-        if "graph.png" in os.listdir():
-            os.remove("graph.png")
-        st.session_state.logs = ""
-        with st.spinner("Generating response..."):
-            bot.query(query)
-        answer_match= re.search(r"Answer:", st.session_state.logs)
-        if answer_match:
-            answer_end_index = answer_match.end()
-            subsequent_text = st.session_state.logs[answer_end_index:].strip()
-        st.success(subsequent_text)
-
+        if not query:
+            st.error("Please enter a query.")
+        else:
+            if "graph.png" in os.listdir():
+                os.remove("graph.png")
+            st.session_state.logs = ""
+            with st.spinner("Generating response..."):
+                bot.query(query)
+            answer_match = re.search(r"Answer:", st.session_state.logs)
+            if answer_match:
+                answer_end_index = answer_match.end()
+                subsequent_text = st.session_state.logs[answer_end_index:].strip()
+            st.success(subsequent_text)
 with col2:
     st.header("Output")
     if "graph.png" in os.listdir():
@@ -171,4 +173,4 @@ with col2:
         st.write("No plot generated yet.")
 
 st.header("Live Logs")
-st.text_area("Logs", value=st.session_state.logs, height=400)
+st.text_area("Logs", value=st.session_state.logs, height=400, disabled=True)