Update app.py

app.py

@@ -77,6 +77,7 @@ with col1:
             if st.session_state['warnings']:
                 for warning in st.session_state['warnings']:
                     st.warning(warning)
+                st.session_state['warnings'].clear()
 
         if option_selected == 'Upload a file(csv/txt)':
             
@@ -92,6 +93,7 @@ with col1:
                     if st.session_state['warnings']:
                         for warning in st.session_state['warnings']:
                             st.warning(warning)
+                        st.session_state['warnings'].clear()
                     else:
                         result, warnings = fill_mask(input_sentences)
                         st.session_state['warnings'] = warnings 
@@ -99,6 +101,7 @@ with col1:
                         if st.session_state['warnings']:
                             for warning in st.session_state['warnings']:
                                 st.warning(warning)
+                            st.session_state['warnings'].clear()
 
         st.markdown("Example")
         st.code(sample_sentence, wrap_lines=True)