electrical - Dual Function AFCI/GFCI breakers trip under any load

This is a new subpanel in a workshop and the electrician told me because it's new all circuits have to be AFCI and because it's an outbuilding it should be GFCI too. So, I purchased these breakers

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Eaton Type BR 20-Amp 1-Pole Dual Function AFCI/GFCI Circuit Breaker in the Circuit Breakers department at

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