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报错提示:
Traceback (most recent call last):
File "./vendor/zigbee_efr32mg21/prepare.py", line 161, in <module>
from create_toolchain import create_toolchain
ImportError: cannot import name 'create_toolchain' from 'create_toolchain' (./vendor/zigbee_efr32mg21/toolchain/software\create_toolchain.py)

已解决 好像是iar没有license ,后面好了