Can't remove Url Slug on Home

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I changed somehow, i can't remember how, the URL Slug for Home to "test". So that if you go to mysteyr.eu you become redirected to mysteyr.eu/test . If I change the slug of the page at the composer, mysteyr.eu still redirects to mysteyr.eu/test but now to an empty page. Where can I change home back to not redirecting to /test?