API /status return error

[BaylorWong]

WinAppDriver returns me error when i test interface /status

here is the information of WinAppDriver
my version is 1.2.1

GET /status HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate, br
Connection: keep-alive
Host: localhost:4723
Postman-Token: 3581b1e3-ff18-4b35-8ed7-e3f789a715e4
User-Agent: PostmanRuntime/7.29.0


HTTP/1.1 500 Internal Error
Content-Length: 133
Content-Type: application/json

{"status":13,"value":{"error":"unknown error","message":"An unknown error occurred in the remote end while processing the command."}}