This likely means that the library (@angular/material/autocomplete) which declares MatAutocompleteModule is not compatible with Angular Ivy.Can't bind to 'matAutocomplete' since it isn't a known property of 'textarea’If there is a case where any thing inside your model (your class) has changed but it hasn't reflected the viewIt looks like you're using the disabled attribute with a reactive form directive. If you set disabled to true when you set up this control in your component class, the disabled attribute will actually be set in the DOM for you. We recommend using this approach to avoid 'changed after checked' errors.How to access ngx bootstrap dropdown programmatically?