How to fix Failed to decode downloaded font error?

Question

css

In the browser, the font is connected, but in the console it gives the following error.
I connect fonts like this

@font-face {
  font-family: 'Fiesta';
  src: url('/fonts/Fiesta.eot?#iefix') format('embedded-opentype'), 
  url('/fonts/Fiesta.woff') format('woff'),
  url('/fonts/Fiesta.ttf')  format('truetype'), 
  url('/fonts/Fiesta.svg#Fiesta') format('svg');
  font-weight: normal;
  font-style: normal;
}

It is worth saying that the font was generated on the service from ttf

Answer 1

www.font2web.com
I ran ttf through this service and everything worked out

Answer 2

Validate all fonts in font programs.
fontforge.github.io/en-US
www.high-logic.com/font-editor/fontcreator.html
https://glyphsapp.com
https://birdfont.org/