Catchable fatal error

My website broke down and now it is showing this:

Catchable fatal error: Argument 1 passed to {closure}() must be an instance of string, string given in /data/7/8/78354560-4aa1-4788-b488-402f4502075b/gntobacco.com/public_html/wp-content/themes/astra/template-parts/header/builder/desktop-builder-layout.php on line 41

There has been a critical error on this website.

What do I do?

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