When a page is not found in your native or Progressive Web App (PWA), our servers will send an error called error 404.
This can happen when the content has been removed, moved, or the URL is typed incorrectly.
The page sent by the servers to indicate the presence of this error is a generic page called 404 page.
Go to bottom left menu Settings > 404 error in your back office to customize this page.
You can display a text, edit content, font, colors, and add a picture of your choice (1024 x 1024 px).
You have a preview on the right part of your back office page.
Don't forget to update your modifications in the menu Sales Channel > PWA > Update > Settings to apply the changes.