Unable to upload to XIAO BLE with Arduino IDE 2.0.0

Thank you very much for your reply.
After trying many things, I found that “mbed 1.0.0” is fine, but “mbed 2.6.1” and “mbed 2.7.2” cause problems.
IDE 2.0 still seems to be unstable, so I will use IDE 1.8.19 for the time being.