rt-studio使用DAP-link报错是何原因？如何解决呢

使用DAPLink，发现无法debug，也无法下载，会报如下错误：

0000971 W Overlapping memory regions in file ./packs/Keil.STM32L4xx_DFP.2.3.0-small.pack (STM32L412C8Tx); deleting outer region. Further warnings will be suppressed for this file. [cmsis_pack]

0001241 I Target type is stm32f405rg [board]

0001479 C Unexpected ACK value (5) returned by probe [ main ]

Traceback (most recent call last):

File "pyocd\probe\cmsis_dap_probe.py", line 345, in read_dp

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 976, in read_reg

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 970, in read_reg_cb

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 154, in get_result

File "pyocd\utility\concurrency.py", line 29, in _locking

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 790, in flush

File "pyocd\utility\concurrency.py", line 29, in _locking

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 1056, in _read_packet

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 473, in decode_data

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 442, in _decode_transfer_block_data

File "pyocd\probe\pydapaccess\dap_access_cmsis_dap.py", line 365, in *check_response

pyocd.probe.pydapaccess.dap_access_api.DAPAccessIntf.TransferError: Unexpected ACK value (5) returned by probe

The above exception was the direct cause of the following exception:

Traceback (most recent call last):

File "pyocd_main* .py", line 161, in run

File "pyocd\subcommands\gdbserver_cmd.py", line 190, in invoke

File "pyocd\core\session.py", line 386, in enter

File "pyocd\core\session.py", line 523, in open

File "pyocd\board\board.py", line 124, in init

File "pyocd\core\soc_target.py", line 147, in init

File "pyocd\utility\sequencer.py", line 213, in invoke

File "pyocd\utility\sequencer.py", line 208, in invoke

File "pyocd\coresight\dap.py", line 406, in _connect

File "pyocd\coresight\dap.py", line 180, in connect

File "pyocd\coresight\dap.py", line 221, in _connect_dp

File "pyocd\coresight\dap.py", line 248, in read_idr

File "pyocd\probe\cmsis_dap_probe.py", line 348, in read_dp

pyocd.core.exceptions.TransferError: Unexpected ACK value (5) returned by probe