When testing vCPE closed loop control in OOM-deployed evn in SB04, Policy sent a restart message to APPC, APPC replied with an error message like below. Please help. Thanks.

["\{\"body\":\{\"output\":\{\"common-header\":\{\"api-ver\":\"2.00\",\"flags\":\{},\"originator-id\":\"4a6bcb92-735d-40cf-ac62-04a03a271626\",\"request-id\":\"4a6bcb92-735d-40cf-ac62-04a03a271626\",\"sub-request-id\":\"1\",\"timestamp\":\"2018-06-01T15:36:57.861Z\"},\"status\":\{\"code\":200,\"message\":\"*Unexpected SLI Adapter failure*\"}}},\"cambria.partition\":\"MSO\",\"correlation-id\":\"4a6bcb92-735d-40cf-ac62-04a03a271626-1\",\"rpc-name\":\"restart\",\"type\":\"response\"}"]