Clean People Picker in React SharePoint - reactjs

Question

with the code below I have to clean up a sharepoint people picker using typescript, the code runs without errors but it doesn't clean up the people picker, what am I doing wrong?
React Code:
var tendinesportello = this.Fields.Lok_SportelloCompetente.find("select");
var sportelloValIniziale = tendinesportello.val();
try {
var operatoreincaricato = this.Fields.User_OperatoreIncaricato.find(
"input.sp-peoplepicker-editorInput"
).get(0);
console.log(operatoreincaricato);
console.log("Operatore incaricato: " + operatoreincaricato);
} catch (err) {
console.log("Errroe recupero valore: " + err.toString());
}
MakeReadOnlyUserFields([this.Fields.User_OperatoreIncaricato]);
//Seleziono il people picker
let peoplePicker: SPClientPeoplePicker =
SPClientPeoplePicker.PickerObjectFromSubElement(operatoreincaricato);
tendinesportello.on("change", function () {
if (sportelloValIniziale != tendinesportello.val()) {
console.log("Il valore è change");
//Eseguo la pulizia del picker
cleanPeoplePicker(peoplePicker);
}
});
export function cleanPeoplePicker(peoplePicker: SPClientPeoplePicker) {
try {
var selectedUsers = peoplePicker.GetAllUserInfo();
var resovledListElmId = peoplePicker.ResolvedListElementId;
$("#" + resovledListElmId)
.children()
.each(function (index, element) {
console.log("Sono in DeleteProcessedUser elemento: " + index);
peoplePicker.DeleteProcessedUser(element[index]);
});
} catch (err) {
console.log("Errore pulizia picker: " + err);
}
}