JavaScript Error - Uncaught SyntaxError: Unexpected token {

I am trying to use Chart JS in one of my laravel applications.

I am pushing the data through the route and using json_encode($gross) to echo the gross of each order by day but I am getting the following error in my console log:

Uncaught SyntaxError: Unexpected token {

It references the the line of where I have used json_encode($gross). Anyone have any ideas why this is happening?

Here is the code coming through the controller:

public function index()
{   $wkRevenue = \App\Order::where('created_at', '>=' , \Carbon\Carbon::now()->startOfMonth())->get();
    // dd($wkRevenue->pluck('created_at','gross'));

    return view('admin.dashboard')
            ->with('created_at', $wkRevenue->pluck('created_at'))
            ->with('grosss', $wkRevenue->pluck('gross'));
}

Here is the code in the js file:

var data = {
    type:'line',
    labels:['Mon','Tues','Wed','Thurs','Fri','Sat','Sun'],
    datasets:[
    {
        data: {!! json_encode($gross) !!},
        backgroundColor:'rgba(137, 200, 85, 0.4)',
    }
]
}
var graph = document.getElementById('myNewChart').getContext('2d');
var myNewChart = new Chart(graph ,{
type: "line",
data: data,
options:{
    title:{
        display:true,
    }
}
}); 

via JMD