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/myfit/how-to-start-running.html?srsltid=AfmBOop9fFWM4KTPX2tEJqxZ5as7AoLigGGgS64XY1JoNelq0ZSog53E:1260:46)