Telephone Field Issue

[ainsleyclark]

Recieving an error when using the TelephoneField

{
label: 'Contact Details',
	fields: [
		{
			name: 'contact',
			type: 'group',
			interfaceName: 'Contact',
			admin: {
				hideGutter: true,
			},
			fields: [
				{
					type: 'row',
					fields: [
						{
							name: 'email',
							type: 'email',
							label: 'Email',
							admin: {
								width: '40%',
							},
						},
						...TelephoneField({
							name: 'telephone',
							admin: {
								width: '50%',
								placeholder: '+44 1732 123456',
							},
						}),
					]
				},
			],
		},
	]
}