Unable to add custom formatter in logging subsystem using webconsole

nexpected HTTP response: 500

Request
{
    "name" => "name",
    "address" => [
        ("subsystem" => "logging"),
        ("custom-formatter" => "name")
    ],
    "operation" => "add"
}

Response

Internal Server Error
{
    "outcome" => "failed",
    "failure-description" => "WFLYCTL0155: class may not be null",
    "rolled-back" => true
}