angular - Can't bind to 'formGroup' since it isn't a known property of 'form' - Stack Overflow

The situation I am trying to make what should be a very simple form in my Angular application, but no matter what, it never works. The Angular version Angular 2.0.0 RC5 The error Can't bind to '

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Angular 12 - Can't bind to 'ngModel' since it isn't a known property of 'input' - Stack Overflow

stepper component is having some issue in it give's console error linear etc unknow property of md-horizontal-stepper please give some solution to it · Issue #7353 · angular/components · GitHub

angular - Can't bind to 'formGroup' since it isn't a known

User Abhishek Singh - Artificial Intelligence Stack Exchange

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Can't bind to 'formGroup' since it isn't a known property of 'form' · Issue #14288 · angular/angular · GitHub

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angular - Can't bind to 'formGroup' since it isn't a known