Ensure that PHP 8.2 or newer is installed on your local machine or server. Below are some resources for different operating systems:
Your page names must match the names displayed on Crunchyroll.
This is very important, because the RSS news feed is matched with this series name.
Notion considers this as an integration. To create a new integration, go here, and a secret key will be presented to you. You will need this key later.
After reloading the Series page that you have duplicated, the name you have given to your integration will appear in the "Add connections" section. In this example, it was named "AnimeEpisode". Connecting your integration with your page is necessary for the Syncer to be able to read from and write to your Notion page.