このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
to not allow typing in textbox
対処
関連リンク
How to prevent user from typing in text field without disabling ...stackoverflow.com/...typing-in-text-field.../6951678
https://stackoverflow.com/questions/6951658/how-to-prevent-user-from-typing-in-text-field-without-di・・・
not allow typing in a text field html, can use JavaScript or any ...stackoverflow.com/.../not-allow-typing-in-a-text-field-h...
https://stackoverflow.com/questions/23204757/not-allow-typing-in-a-text-field-html-can-use-javascrip・・・
JavaScript "to not allow typing in textbox"のヤフオク!検索結果（341件）ヤフオク!
https://auctions.yahoo.co.jp/search/search?rkf=2&p=JavaScript+%22to+not+allow+typing+in+textbox%22&a・・・