use Convolute bug

[unsilence]

use fabric.Image.filters.Convolute will receive error
let filter = new fabric.Image.filters.Convolute({ matrix: [0, -1, 0, -1, 0.5, -1, 0, -1, 0] });
var obj = canvas.getActiveObject();
obj.filters[0] = filter;
obj.applyFilters();
canvas.renderAll();

[asturur]

What is the error? can you create a fiddle please?

[unsilence]

@asturur

[unsilence]

But what puzzles me is that the example given by the official can run. Is it my fault?

[asturur]

no is broken also there.