Bad message format

Using Streamlit
, ,
1

I have just updated my streamlit app from 1.35 to 1.37 but I am getting an error while clicking a button which fetches data from an api and displays it on a toast.

Bad message format
Bad ‘setIn’ index 1 (should be between [0, 0])

This is code which is being used for this work:

    @st.cache_data(show_spinner=False)
    def retrieve_data(fd,td):
        api = "http://api.com"
        post_data = {
                    "starttime":fd,
                    "endtime":td
                    }
        response = requests.post(api,data=post_data)
        return response
        
    @st.cache_data(ttl=10,show_spinner=False)
    def how_many_calls(fd,td):
        response = retrieve_data(fd,td)
        if response.status_code == 200:
            data = response.json()['msg']
            df = pd.DataFrame(data)
            total_calls = len(data)
            message = f"#### Total calls: {total_calls}"
         
        else:
            message = "Error"
        return message
            
    @st.fragment()
    def check_total_calls():
        actual_call_button = st.button("Actual Calls?",use_container_width=True) 
        if actual_call_button:
            msg = how_many_calls(st.session_state.from_datetime,st.session_state.to_datetime)
            st.toast(msg)
check_total_calls()

Earlier in version 1.35 it was all working fine. Dont know what happened now!!