Weird names instead of buttons

Where to find the client id and secret in this tutorial in github?
https://discuss.flarum.org/d/2958-datitisev-admin-dashboard
What should I type in
Application name
Homepage URL
Application description
Authorization callback URL

I am seeing weird names instead of buttons and labels in my admin area.
Searched all this forum, but couldn't find anything.

ChristopherKhawand Try clearing your flarum cache with

php flarum cache:clear

as well as clearing your browser cache.

@Ralkage Thank you, that worked ?

DMT I removed your post as it violated our Community Guidelines:

Make sure your replies provide constructive feedback and support to allow for an inclusive community.