Failed to open nRF BLE Driver. Error code: 0x8029

I try to run https://github.com/NordicSemiconductor/pc-ble-driver/tree/master/examples/nordic_uart_client But the following error occurred.

D:\pc-ble-driver\build\examples>nordic_uart_client_sd_api_v6.exe
Serial port used: COM5
Baud rate used: 1000000
Status: 5, message: Error setting up serial port COM5. open: system can't find file
Failed to open nRF BLE Driver. Error code: 0x8029

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