Size not available

[kurtomerfaruk]

When I want to use FilePoster I get size unavailable. Is there something I missed with my codes as below?

`
FilePond.registerPlugin(
FilePondPluginFilePoster,
FilePondPluginImagePreview
);

    FilePond.create(document.querySelector('input[name="cover"]'));
    FilePond.setOptions({
        server: {
            url: "{{ config('filepond.server.url') }}",
            headers: {
                'X-CSRF-TOKEN': "{{ @csrf_token() }}",
            },
        },
        files: [
            {
                source: "http://127.0.0.1:8000/storage/covers/project-cover-639cf605b3251.png",
                options: {
                    type: 'local',
                    metadata: {
                        poster: "http://127.0.0.1:8000/storage/covers/project-cover-639cf605b3251.png",
                    },
                }
            }
        ]
    });

`

I am getting error Argument 1 passed to RahulHaque\Filepond\Services\FilepondService::offset() must be of the type string

How should I go about this?
Thanks