Getting error "Serialization of 'Closure' is not allowed" when notification fails over queue.

[rahul-jha-superyouclub]

Stack Trace:

{
    "message": "Serialization of 'Closure' is not allowed",
    "exception": "Exception",
    "file": "vendor/laravel/framework/src/Illuminate/Queue/Queue.php",
    "line": 160,
    "trace": [
        {
            "file": "vendor/laravel/framework/src/Illuminate/Queue/Queue.php",
            "line": 160,
            "function": "serialize"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Queue/Queue.php",
            "line": 129,
            "function": "createObjectPayload",
            "class": "Illuminate\\Queue\\Queue",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Queue/Queue.php",
            "line": 107,
            "function": "createPayloadArray",
            "class": "Illuminate\\Queue\\Queue",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Queue/SyncQueue.php",
            "line": 71,
            "function": "createPayload",
            "class": "Illuminate\\Queue\\Queue",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Queue/SyncQueue.php",
            "line": 56,
            "function": "executeJob",
            "class": "Illuminate\\Queue\\SyncQueue",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Queue/Queue.php",
            "line": 59,
            "function": "push",
            "class": "Illuminate\\Queue\\SyncQueue",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php",
            "line": 633,
            "function": "pushOn",
            "class": "Illuminate\\Queue\\Queue",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php",
            "line": 552,
            "function": "queueHandler",
            "class": "Illuminate\\Events\\Dispatcher",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php",
            "line": 478,
            "function": "Illuminate\\Events\\{closure}",
            "class": "Illuminate\\Events\\Dispatcher",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php",
            "line": 286,
            "function": "Illuminate\\Events\\{closure}",
            "class": "Illuminate\\Events\\Dispatcher",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php",
            "line": 266,
            "function": "invokeListeners",
            "class": "Illuminate\\Events\\Dispatcher",
            "type": "->"
        },
        {
            "file": "vendor/laravel-notification-channels/fcm/src/FcmChannel.php",
            "line": 67,
            "function": "dispatch",
            "class": "Illuminate\\Events\\Dispatcher",
            "type": "->"
        },
        {
            "file": "vendor/laravel-notification-channels/fcm/src/FcmChannel.php",
            "line": 57,
            "function": "dispatchFailedNotification",
            "class": "NotificationChannels\\Fcm\\FcmChannel",
            "type": "->"
        },
        {
            "file": "vendor/laravel/framework/src/Illuminate/Collections/Traits/EnumeratesValues.php",
            "line": 257,
            "function": "NotificationChannels\\Fcm\\{closure}",
            "class": "NotificationChannels\\Fcm\\FcmChannel",
            "type": "->"
        },
        {
            "file": "vendor/laravel-notification-channels/fcm/src/FcmChannel.php",
            "line": 57,
            "function": "each",
            "class": "Illuminate\\Support\\Collection",
            "type": "->"
        },
        {
            "file": "vendor/laravel-notification-channels/fcm/src/FcmChannel.php",
            "line": 47,
            "function": "checkReportForFailures",
            "class": "NotificationChannels\\Fcm\\FcmChannel",
            "type": "->"
        },
        {
            "function": "NotificationChannels\\Fcm\\{closure}",
            "class": "NotificationChannels\\Fcm\\FcmChannel",
            "type": "->"
        },
        ...
        ...
        ...
    ]
}

[dwightwatson]

Not sure what's going on here. Do you have anything interesting configuration on your queue? Does it affect other queue drivers? Can you narrow down environment that causes this error? Open to PRs.