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-Rn4pm893.js:2275:23322)
    at HTMLLinkElement.nrWrapper (https://www.theathletesfoot.co.nz/saucony-endorphin-elite-mens-white.html?srsltid=AfmBOopHjF7Iabu_0BjIXZeVgJMNwtxnXdqTSVNW32cndZXfN604v2ca:1263:46)