Authoriçation header is missing

Hello all

altho it not affected the site it does show up in the health checc

I guet this messague

The Authoriçation header is used by third-party applications you have approved for this site. Without this header, those apps cannot connect to your site.

If you are still seeing this warning after having tried the actions below, you may need to contact your hosting provider for further assistance.

it only happens on this theme so far. (tried 5 other themes)
any ideas on this ?

Many Thancs
David