UnhandledPromiseRejection ERR_UNHANDLED_REJECTION' Ошибка npm test express

[UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "SyntaxError: Unexpected token A in JSON at position 0".] {
code: 'ERR_UNHANDLED_REJECTION'
}
node:internal/process/promises:246
triggerUncaughtException(err, true /* fromPromise */);
^

[UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "SyntaxError: Unexpected token A in JSON at position 0".] {
code: 'ERR_UNHANDLED_REJECTION'

Решение

Решил локально переключением на более старую версию ноды - 14ю (на которой и был оригинальный проект), у меня же стояла версия 16.