fix

app.py

@@ -177,7 +177,7 @@ if __name__=='__main__':
                                     'roberta-base','roberta-large',
                                     'albert-base-v2','albert-large-v2','albert-xlarge-v2','albert-xxlarge-v2'),index=3)
         st.session_state['model_name'] = model_name
-        if st.button('Confirm',key='model_name'):
+        if st.button('Confirm',key='models'):
             st.session_state['page_status'] = 'type_in'
             st.experimental_rerun()