CannotSendRequest error with deta and streamlit

[solert]

Hello,

I use deta in a streamlit app.
At each run, the app requests deta to display some info. Also, I created 2 st.text_input and 1 st.button. The button has an on_click input to which I passed a function that requests deta with one get then a put.
When I fill both fields and then click on the button, I get the http.client.CannotSendRequest: Request-sent error.
What is weird is that the error does not occur all the time. It occurs very often when I click on the button directly after editing one of the text input. However, when I click it after having clicked outside the text input first, I never get the error. Also when I put time.sleep(1) before the get request in the on_click function. It also works to do a try except until the request works.

Would you have any idea what happens?

Here is the code to reproduce the error:

db.py

from deta import Deta
from deta.base import _Base

deta = Deta("")
db = deta.Base("data")

def get_user(db: _Base, key: str):
    print('before get')
    user = db.get(key)
    return user if user else None

def update_user(db: _Base, key: str, data: dict):
    user = get_user(db, key)
    user.update(data)
    user = db.put(user, key)  # Push data to the db
    return user

app.py

import streamlit as st
from streamlit_extras.stateful_button import button  as stateful_button  # Button that keeps track of its state, so that it works as a toggle button
from db import db, get_user, update_user

def add_new(db, user_key: str):
    user = get_user(db, user_key)
    new = {'new_a': st.session_state['new_a'], 'new_b': st.session_state['new_b']}
    if 'news' in user:
        news = user['news']  # news is a list
        news.append(new)
    else:
        news= [new]
    update_user(db, user_key, {'news': news})
    st.session_state['add'] = False

user_key = ''
user = get_user(db, user_key)

tabs = ['A', 'B', 'C']
management_tab, analysis_tab, questions_tab = st.tabs(tabs)

### Management tab ###
with management_tab:

    # There is code where I get data here but I noticed the error can still happen without it (even if less)
    
    if stateful_button('Add', key='add'):
        new_a = st.text_input('A', key='new_a')
        new_b = st.text_input('B', key='new_b')
        send_button = st.button('Send', key='send', on_click=lambda: add_new(db, user_key))

Thank you for your help!