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/mens/outdoor?p=5&srsltid=AfmBOorm6T_-WE4SWjKeMCC7PDO3O0iXMYm4hYCObxP0BxYtn9j7wKqm:1260:46)