error at checkout in theme.liquid......how do i fix it?

[SnazzyStyle]

{%- unless settings.type_body_font.system? -%}
<link rel="preload" as="font" href="{{ settings.type_body_font | font_url }}" type="font/woff2" crossorigin>
{%- endunless -%}
{%- unless settings.type_header_font.system? -%}
<link rel="preload" as="font" href="{{ settings.type_header_font | font_url }}" type="font/woff2" crossorigin>
{%- endunless -%}