Japanese is garbled on the page opened in save_and_open_page of capybara.

In the head of layouts/application.html.erb

<metahttp-equiv="Content-Type" content="text/html;charset=utf-8"/>

The garbled characters have been corrected by adding .

If you want to use meta http-equiv to specify charset in the HTML header, write it at the beginning of the head tag.

If Japanese strings are used in title tags before charset specification, the browser implementation may cause garbled characters.