Async function in validator

[JCDenton47]

I try to put async function in the validator of the question object. It always prompt twice. Is it possible to put async function in validator ?
validate: async (ans: string[]) => { // console.log(ans); // if (ans.length === 0 || ans.length > 3) { // return 'Error!!! Invalid PoC number'; // } else if (ans.length !== new Set(ans).size) { // return 'Duplicate value inserted'; // } const PoCValid = await validatePoCs(ans.map((val) => (val += '@ea.com'))); return PoCValid; // return true; },

** I only enter once, but the question always prompt twice **