PYNQ 2.7 custom board building error

Thanks for your reply.
I am sorry, but it did not solve my problem. Actually, I have licenses to build pynq-Z2. it can generate pynq-Z2 bit successfully in vivado. I just can’t understand why it need licenses for ZCU104 when I use cmd : make BOARDS=Pynq-Z2 PREBUILT=/pynq/focal.arm.2.7.0_2021_11_17.tar.gz.
Can you tell me how to skip ZCU104 building process. Because I only want to generate pynq-Z2 now.