database – wordpress page title (html title tag)

First, I work on a website that uses flywheel for hosting. I develop the theme locally, then send the changes via sftp to the transfer server, then from production to production.
Recently, I had to make a backup to a live website and also reset the steering wheel preparation area.

Anyway, the title of my homepage has been replaced by 43. Now this title probably came up because the main website / staging was offline for a while , displaying a nginx error and that the title of the staging homepage is stuck at 43. I downloaded the database, imported locally and the title is still 43, so it must be somewhere in the database. Now, I'm afraid that if I apply changes to the production, the title remains the same … This only happens on the root / home page. An idea how to solve this problem? Thank you.