I can no longer log in as an administrator.
I can no longer access the Magento2 admin panel

1. (I want to change my home settings.)

2. In the admin page, add "jp/" at the end of URLs in "General" > "Web" > Base URLs
(I wanted to create a JP home in store view.)

3. Only on the admin screen side, the / jp / directory is lowered, it does not work with CSS, JS, etc. and cannot be saved again.

4. Log out (time out?) Then I can no longer log in to the admin panel.

When I go to the login URL, it redirects me to jp/ additional URL and I get a 404.

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I want to login.

I want to delete the / jp / and save it.

I would appreciate knowing how to deal with this. Thank you for your help.