Different behavior after deployed PrimeNG UI to Firebase

I have run my Angular+PrimeNG UI kit in StackBlitz. It looks perfect until i deployed to Firebase. https://fireforgez.firebaseapp.com/ All icons are missing and become a square box.

Warning:

Failed to decode downloaded font: <URL>
Failed to decode downloaded font: https://fireforgez.firebaseapp.com/fonts/primeicons.ttf...

OTS parsing error: invalid version tag...

Error

HttpErrorResponse {headers: HttpHeaders, status: 200, statusText: "OK", url: "https://fireforgez.firebaseapp.com/assets/i18n/en.json", ok: false, …}
error: {error: SyntaxError: Unexpected token < in JSON at position 0 at JSON.parse (<anonymous>) at XMLHtt…, text: "<html><head><script src="https://c.staticblitz.com…90764058176"></script></head><body></body></html>"}
headers: HttpHeaders {normalizedNames: Map(0), lazyUpdate: null, lazyInit: ƒ}
message: "Http failure during parsing for https://fireforgez.firebaseapp.com/assets/i18n/en.json"
name: "HttpErrorResponse"
ok: false
status: 200
statusText: "OK"
url: "https://fireforgez.firebaseapp.com/assets/i18n/en.json"

The icons are all missing and i got warning and errors which i dont understand. I tried to relate this with module "ngx-translate" as it quite complex compared to other modules, i also included additional language files under i18n folder.