Error on adding input textfield to stage

[charlie-says]

I've been trying to get the text input to work in my project.

"pixi-text-input": "^1.0.6"
"pixi.js-legacy": "5.3.8"

I had to tweak the import as per the first issue thread:
import TextInput from "pixi-text-input"

and when creating the text input field with:
let t1 = new TextInput({...
that seemed to be fine.

However, when I add it to the stage, I get this error:
Uncaught TypeError: (intermediate value).render is not a function
at TextInput.render (pixi-input-test.js:70784:11)
at Container.render (pixi-input-test.js:17434:34)
at Renderer.render (pixi-input-test.js:11239:23)
at Application.render (pixi-input-test.js:45510:23)
at TickerListener.emit (pixi-input-test.js:21105:25)
at Ticker.update (pixi-input-test.js:21560:37)
at Ticker._tick (pixi-input-test.js:21310:23)

Any ideas how to resolve?