Prawidłowo zaimportuj matę ikonę Angular 10
// In Angular in style.css
@import 'https://fonts.googleapis.com/icon?family=Material+Icons';
SteDeus
// In Angular in style.css
@import 'https://fonts.googleapis.com/icon?family=Material+Icons';@import url("https://fonts.googleapis.com/icon?family=Material+Icons");