[Plugin] Http/s REST, blueprintable JSON and Parse REST API manager at once (VaRest)

when I wanted to use “GetResponseContent” It gives me This notification:

DEPRECATED: please use GetResponseContentAsString() instead

and when I use that it just shows this:
{}

so please help me I reeeaaaaallyyy need to use your plugin in Unreal Engine 4

Just show me to the direction to learn

Respects