How to drag and drop a link in joint js plus

[ghost]

Hi team

I created a link using this

{
type: "standard.Link",
size: { width: 60, height: 60 },
source: { x: 20, y: 20 },
target: { x: 130, y: 20 },
attrs: {
line: {
stroke: "#222138",
sourceMarker: {
fill: "#31d0c6",
stroke: "none",
d: "M 5 -10 L -15 0 L 5 10 Z",
},
targetMarker: {
fill: "#fe854f",
stroke: "none",
d: "M 5 -10 L -15 0 L 5 10 Z",
},
},
},
}

In the stencil paper.
And I am trying to drag and drop the link to the normal paper. that time it's not working, it's showing an error like this. How can I solve this issue?

In the stencil paper.

Actual need is

I want to create a diagram like a pipeline structure. (Crete flexible lines)

[kumilingus]

Duplicate of #1659.

[ghost]

Thanks, @kumilingus