![WebStorm: Angular Material HTML tags shown as 'not a known element' but compiles and works fine - Stack Overflow WebStorm: Angular Material HTML tags shown as 'not a known element' but compiles and works fine - Stack Overflow](https://i.stack.imgur.com/ouPzp.png)
WebStorm: Angular Material HTML tags shown as 'not a known element' but compiles and works fine - Stack Overflow
help(COMPONENT): error NG8001: 'mat-form-field' is not a known element · Issue #24015 · angular/components · GitHub
![NG8001: 'mat-icon' is not a known element: Error occurs in the template of component xxComponent. - YouTube NG8001: 'mat-icon' is not a known element: Error occurs in the template of component xxComponent. - YouTube](https://i.ytimg.com/vi/m5hCKTH62Ek/hqdefault.jpg?sqp=-oaymwE8CKgBEF5IWvKriqkDLwgBFQAAAAAYASUAAMhCPQCAokN4AfABAfgB_gmAAtAFigIMCAAQARhyIEIoPTAP&rs=AOn4CLBPbxxAdK_SBv3-pZHfbYhKtKlAsw)
NG8001: 'mat-icon' is not a known element: Error occurs in the template of component xxComponent. - YouTube
![✓ NG8001: 'mat-icon' is not a known element: Error occurs in the template of component xxComponent. - YouTube ✓ NG8001: 'mat-icon' is not a known element: Error occurs in the template of component xxComponent. - YouTube](https://i.ytimg.com/vi/Etj4vNgHz0Y/hqdefault.jpg?sqp=-oaymwEiCKgBEF5IWvKriqkDFQgBFQAAAAAYASUAAMhCPQCAokN4AQ==&rs=AOn4CLCXOEzclkKfUXTD21UuccMFCEAjWQ)