Unexpected Application Error!

Unable to preload CSS for /assets/d-14207725902-1/promo.page.css

Error: Unable to preload CSS for /assets/d-14207725902-1/promo.page.css
    at HTMLLinkElement.<anonymous> (https://start.aftersell.app/assets/d-14207725902-1/index.js:1:6932)
    at HTMLLinkElement.o (https://start.aftersell.app/assets/d-14207725902-1/index.js:33:5118)