Update app.py

app.py

@@ -131,7 +131,7 @@ def main():
                 img = Image.open(uploaded_photo)
                 img = img.save("img.png")
                 img = cv2.imread("img.png")
-                st.text("Select the summarization type:")
+                st.subheader("Select the summarization type:")
                 c4, c5 = st.columns([1,7])
                 if c4.button("BENGALI"):
                     text =  pytesseract.image_to_string(img, lang="ben")
@@ -149,7 +149,7 @@ def main():
                 img = img.save("img.png")
                 img = cv2.imread("img.png")
                 #text = pytesseract.image_to_string(img) if st.checkbox("Bangla") else pytesseract.image_to_string(img, lang="ben")
-                st.text("Select the summarization type:")
+                st.subheader("Select the summarization type:")
                 #st.image(camera_photo, caption='Uploaded Image', use_column_width=True)
                 c6, c7 = st.columns([1,7])
                 if c6.button("Bangla"):
@@ -199,11 +199,12 @@ def main():
             st.session_state.history.append({"message": user_message, "is_user": True})
             st.session_state.history.append({"message": message_bot, "is_user": False})
         from copyreg import clear_extension_cache
-        for chat in st.session_state.history:
-            st_message(**chat)
+        if st.session_state.history!=[]:
+            for chat in st.session_state.history:
+                st_message(**chat)
         st.text_input("Talk to the bot", key="input_text", on_change=generate_answer)
         if st.button("Refresh/New Chat"):
-           st.session_state.history = None
+           st.session_state.history = []
             
 if __name__ == "__main__":
     main()