What causes the “control.registerOnChange is not a function” error

Question

I have a form using the reactive form approach. The form is created as follow in my pug:

form([formGroup]=\'form\', novalidate=\'\', (ngSubmit)=\'postSurvey(         


        

Answer 1

to me it happened when I used same [formControl]="carBrand" and [matAutocomplete]="carBrandAuto" from my autocomplete input

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