Enable Twig Debug | Disable Cache | Drupal 8

twig-debug.odt

👉️Initial steps to follow..
📌️1.Copy example.settings.local.php from /sites to /sites/default and rename to settings.local.php
📌️2.Enable render cache by uncomment this $settings['cache']['bins']['render'] = 'cache.backend.null'; in settings.local.php
📌️3.Go to sites/default/settings.php' and uncomment the commented lines that mention 'settings.local.php'.
📌️4.Go to /sites/development.services.yml file and paste below code at the top.
👉️development.services.yml
parameters:
  http.response.debug_cacheability_headers: true
  twig.config:
    debug: true
    auto-reload: true
    cache: false
services:
  cache.backend.null:
    class: Drupal\Core\Cache\NullBackendFactory
📌️5.(Not compulsory)After doing above just rebuild the site to avoid errors by running rebuild.php in url like:  http://localhost/2020/web/rebuild.php

Make sure that settings.local.php has the below line exits in it (check the line no 40 around ).
$settings['container_yamls'][] = DRUPAL_ROOT . '/sites/development.services.yml';

Note: settings.local.php file is for local development. You should remove the file into production.