They will likely not be happy to hear that a problem has arisen, but they will appreciate your honest and open communication.
O yikarịrị ka ha agaghị enwe obi ụtọ ịnụ na nsogbu bilitere, mana ha ga-enwe ekele maka nkwurịta okwu gị n'eziokwu na nke na-emeghe.