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-7MWEoKZ8.js:2278:23322)
    at HTMLLinkElement.nrWrapper (https://www.theathletesfoot.co.nz//shop/sport?p=11&srsltid=AfmBOorxoSAeH_kFn9hPsVF-5RFqP4OgXQTjX_lTJ826jQ_GHpNPBqVx:1260:46)