Approached unrecognized configuration variable sources: "bref"

[sahilr2050]

When running serverless deploy command. The following error came.

Approached unrecognized configuration variable sources: "bref"

Your Environment Information ---------------------------
Operating System: win32
Node Version: 12.18.0
Framework Version: 2.43.0
Plugin Version: 5.1.3
SDK Version: 4.2.2
Components Version: 3.10.0

[sahilr2050]

I have updated to the latest version and it is resolved.