What is ReadTimeoutError in python selenium?

Question

2022-03-15 16:21:01,230 : POST http://127.0.0.1:34661/session/51dfe287ba054e814c0b664c662330c5/element {"using": "css selector", "value": "[name=\"Submit\"]"}
2022-03-15 16:21:01,311 : http://127.0.0.1:34661 "POST /session/51dfe287ba054e814c0b664c662330c5/element HTTP/1.1" 200 88
2022-03-15 16:21:01,313 : Finished Request
2022-03-15 16:21:01,313 : POST http://127.0.0.1:34661/session/51dfe287ba054e814c0b664c662330c5/element/c526e0ba-1d3b-442f-bbfb-167b1ffd6895/click {"id": "c526e0ba-1d3b-442f-bbfb-167b1ffd6895"}
2022-03-15 16:22:31,335 :
ERROR

2022-03-15 16:22:31,336 : ReadTimeoutError("HTTPConnectionPool(host='127.0.0.1', port=34661): Read timed out. (read timeout=<object object at 0x762b3810>)")

2022-03-15 20:53:25,251 : Line No : 26

The above log shows my selenium automation script's log. In which, I actually clicked a button using the name.

from selenium import webdriver
from access_points import get_scanner
from selenium.webdriver.chrome.options import Options
from selenium.common.exceptions import WebDriverException

chrome_options = Options()
chrome_options.add_argument("--headless")
chrome_options.add_argument("--window-size=1920x1080")
chrome_options.add_argument("--no-sandbox")

driver = webdriver.Chrome(options=chrome_options)
driver.implicitly_wait(20) # seconds
driver.get("http://192.168.1.2")
item = driver.find_element_by_name(val)
if item :
    item.click() # Line no 26

This code works sometimes and sometimes not. I was thinking that the button was not loaded at the time of click and hence I put an implicit wait of 10sec. But it is not the reason since it enters the if statement.

What could cause the selenium to raise ReadTimeOutError?