Web Remote Control no property RelativeRotation

I try Web Remote Control Quick Start.

use this

    "objectPath" : "/Game/ThirdPersonBP/Maps/ThirdPersonExampleMap.ThirdPersonExampleMap:PersistentLevel.LightSource_0.LightComponent0",

get error

LogRemoteControl: Error: Web Remote Object Access deserialization error: object property: RelativeRotation is unavailable remotely on object: /Game/ThirdPersonBP/Maps/ThirdPersonExampleMap.ThirdPersonExampleMap:PersistentLevel.LightSource_0.LightComponent0

then tried get all properties output file. Here really not exist propertie RelativeRotation.

How to get and set RelativeRotation in ue4.25 through web control?

I heard that property went private in 4.25.
Not sure if there’s a workaround.