TypeError at "with elements()" on Streamlit Cloud with Python 3.13

[cmallagoli]

Hi, I am experiencing a persistent TypeError at the with elements(...) declaration line when using the library on Streamlit Cloud. The error occurs even with a minimal reproducible example.

Environment:

• Streamlit Cloud
• Python 3.13
• requirements.txt:

  streamlit==1.35.0
  streamlit-elements==0.1.0
  supabase
  pandas
  gotrue
  

Traceback: Traceback: File "/home/adminuser/venv/lib/python3.13/site-packages/streamlit/runtime/scriptrunner/script_runner.py", line 600, in _run_script exec(code, module.dict) File "/mount/src/dashboard/Dash.py", line 355, in

Minimal Reproducible Example: The following code still produces the TypeError after a successful login.

import streamlit as st
from streamlit_elements import elements, dashboard, mui

st.set_page_config(layout="wide")

# Mock session state for testing
if 'auth_user' not in st.session_state:
    st.session_state['auth_user'] = True

if st.session_state.get('auth_user'):
    with st.sidebar:
        st.write("Logged In")

    # Define a simple layout for one item
    layout = [dashboard.Item("test_card", 0, 0, 6, 10)]

    st.write("Attempting to enter elements block...")

    try:
        with elements("dashboard_elements", key="dashboard_main"):
            with dashboard.Grid(layout, rowHeight=30):
                with dashboard.Item(key="test_card"):
                    with mui.Paper(sx={"padding": "15px", "backgroundColor": "#313b44"}):
                        mui.Typography("Static Test Card")
                        mui.Typography("If this appears, the basic layout works.")
        st.write("Elements block finished successfully.")
    except Exception as e:
        st.error(f"Error caught within the script: {e}")