Unexpected Application Error!

Unable to preload CSS for /assets/index-JtPO44df.css

Error: Unable to preload CSS for /assets/index-JtPO44df.css
    at HTMLLinkElement.<anonymous> (https://www.theathletesfoot.co.nz/assets/index--uTRFSZa.js:2278:23322)
    at HTMLLinkElement.nrWrapper (https://www.theathletesfoot.co.nz/vionic-islander-mens-black.html?srsltid=AfmBOooVgtGePYsaZ21uJMz2T6b2hs0wfu9C0knix_NjGlQxYBlG2VuX:1260:46)