fix: refs #6818 add early return for empty phone input in parsePhone function

src/filters/parsePhone.js

@@ -1,6 +1,7 @@
 import axios from 'axios';
 
 export default async function parsePhone(phone, country) {
+    if (!phone) return;
     if (phone.startsWith('+')) return `${phone.slice(1)}`;
     if (phone.startsWith('00')) return `${phone.slice(2)}`;
     try {