Wix Users API Error

function signUpMember(response, cus, lastFour, brand, sourceData, referrer, donationValue) {
	let email = $w("#email").value.toLowerCase();
	let password = $w("#password").value;
	let fname = $w("#fName").value;
	let lname = $w("#lName").value;
	registration(email, password, fname, lname)
  	.then( (res) => {
		console.log(res);
		if(res.status === 'Active') {
			wixUsers.applySessionToken(res.sessionToken)
			.then( () => {
				console.log(wixUsers.currentUser.id);
				$w("#processorText").text = 'Thank you for your patience, We are almost done';
				updateStageOne(response, cus, lastFour, brand, sourceData, referrer, donationValue);
			})
			.catch( (err) => {
				handleAPIFailure(response, cus, lastFour, brand, err, sourceData, referrer, donationValue);
			});
		} else {
			let err = 'server failure';
			handleAPIFailure(response, cus, lastFour, brand, err, sourceData, referrer, donationValue);
		}
	})
	.catch( (err) => {
		console.log(err);
		handleAPIFailure(response, cus, lastFour, brand, err, sourceData, referrer, donationValue);
	});
}