Arm Mbed OS support forum

PyOCD failed to reset the target

Hello

I use the STM32L476 board witch Mbed Studio. I search the debug my program but i have a message error Following:

“pyocd.core.exceptions.TargetSupportError: Target type ‘stm32l476rg’ not recognized. Use ‘pyocd list --targets’ to see currently available target types. See https://github.com/mbedmicro/pyOCD/blob/master/docs/target_support.md for how to install additional target support.
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Could not complete debug: Request reset failed with message: PyOCD failed to reset the target, please check the logs for more information”

What can I do?
Thanks in advance for your answer
Lolo1475