Payroll failed due to auto-enrollment but I am a sole director and the only employee. What have I done wrong?

Hi there, I have set up payroll to run my first monthly payment but QB says it has failed as I have employees that need to auto-enrol. I am the only employee and have selected 'Non-eligible jobholder' and 'No' to 'Enrolled in pension'. What have I done wrong and how can I fix it to enable the payroll to run? Thanks! Emily