I have a child component that is a dropdown select and I need to add formControlName from ReactiveForms, but this dropdown is not implementing the ControlValueAccesor. When I Submit the form the error appears: > 2025-03-14T10:21:28.237Z ERROR [src/errors/global-error-handler.ts:23:0] TypeError: dir.valueAccessor.registerOnTouched is not a function at cleanUpControl (forms.mjs:3151:23) at _FormGroupDirective.removeControl (forms.mjs:5240:5) at _FormControlName.ngOnDestroy (forms.mjs:5869:26) at executeOnDestroys (core.mjs:10462:32) at cleanUpView (core.mjs:10365:9) at destroyViewTree (core.mjs:10200:17) at destroyLView (core.mjs:10338:9) at ViewRef$1.destroy (core.mjs:13127:9) at ComponentRef.destroy (core.mjs:15920:23) at _RouterOutlet.deactivate (router.mjs:2450:22) this Dropdown comes from a library and i tried to modify in local but is not working, the error occurs in this component. this.form2 = new FormGroup({ doc_dni: new FormControl('1', [Validators.required]), docNumber: new FormControl('', [Validators.required, Validators.pattern(PATTERNS.nif)]), codPostal: new FormControl(null, [Validators.required, Validators.pattern(PATTERNS.codPostal)]), movil: new FormControl('', [Validators.required]), }); and this in html: <mac-select formItemUtils formControlName="doc_dni" name="documents" (click)="changePattern(form2.get('doc')?.value)" [items]="documentos" [placeholder]="'Comun.TipoAcceso1.PlaceHolderSelect' | translate" bindLabel="doc" bindValue="idDoc" > </mac-select> Continue reading...