Failed to marshal JCA pool config

[INFO] {
[INFO]     "name" => "custom2",
[INFO]     "blocking" => false,
[INFO]     "max-threads" => {
[INFO]         "count" => 2,
[INFO]         "per-cpu" => 1
[INFO]     },
[INFO]     "allow-core-timeout" => false,
[INFO]     "queue-length" => {
[INFO]         "count" => 2,
[INFO]         "per-cpu" => 1
[INFO]     },
[INFO]     "address" => [
[INFO]         ("subsystem" => "jca"),
[INFO]         ("workmanager" => "default"),
[INFO]         ("short-running-threads" => "custom2")
[INFO]     ],
[INFO]     "operation" => "add"
[INFO] }