Edit requests of concrete5にPSR-4 autoloader形式でコード追加した時に、追加したclassが見つかりませんエラーで毎度ハマるのでメモ

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We released Markdown parser changes on February 24, 2022. There may be some unexpected appearance changes in this update, because this article was posted before the changes.
Please don't forget to check the preview before updating your article.
For more information on the changes, please read this article.