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

Residential Circuit Breakers, CH Circuit Breakers

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QO120PDFC - Mini circuit breaker, QO, 20A, 1 pole, 120VAC, 10kA, dual function, plug on neutral, plug in mount, clam pack

Residual-current device - Wikipedia

Comparing Dual Function AFCI/GFCI Breakers to AFCI Breakers Paired with a GFCI Receptacle

Residential Circuit Breakers, CH Circuit Breakers

BRN115DF Dual Function Arc Fault Ground Fault Circuit Breaker - Breaker Outlet

How to Install a GFCI or AFCI/GFCI Circuit Breaker

The 2014 NEC has mandated Ground Fault and Arc Fault circuit protection on many 15 Amp and 20 Amp kitchen and laundry circuits. General Electric

Q-Line 20 Amp 1-Pole Dual Function Arc Fault/GFCI Breaker

Siemens Q120DFP 20A Dual Function AFCI/GFCI Breaker 887621817350