how to blur only constraint layout

[AhmadHossam10]

How to blur a specific layout not all the view. When I write

Blurry.with(getActivity()).radius(25).sampling(2).async().onto((ViewGroup) constraintLayout.getRootView());

it works but overlays all the screen but I just want to blur a specific part not all of it.

Blurry.with(getActivity()).radius(25).sampling(2).async().onto(constraintLayout);

It doesn't work

[AhmadHossam10]

@wasabeef any help for this error ?

[tjouin]

Same issue here.

[elsennov]

Same here.