clear last tickets

src/config/firebase.js

@@ -83,6 +83,7 @@ export const reportsRef = firestore.collection("reports");
 
 export const { arrayUnion, arrayRemove, increment, serverTimestamp } =
   firebase.firestore.FieldValue;
+export const deleteField = firebase.firestore.FieldValue.delete;
 
 export const getFunctionsClient = (region = "us-central1") => {
   const regionKey = region || "us-central1";