Select file action don't add the file at uploader.queue

[oversio]

This is more like a consult, I trying to use this component and doesn't work for me, please your help. What I'm doing wrong?

when I select a file I'm getting this error: ERROR TypeError: Converting circular structure to JSON --> starting at object with constructor 'FileUploader' | property 'queue' -> object with constructor 'Array' | index 0 -> object with constructor 'FileItem' --- property 'uploader' closes the circle at JSON.stringify (<anonymous>) at JsonPipe.push../node_modules/@angular/common/fesm5/common.js.JsonPipe.transform (common.js:5880) at Object.eval [as updateRenderer] (DerivadosComponent.html:12) at Object.debugUpdateRenderer [as updateRenderer] (core.js:30068) at checkAndUpdateView (core.js:29443) at callViewAction (core.js:29679) at execComponentViewsAction (core.js:29621) at checkAndUpdateView (core.js:29444) at callViewAction (core.js:29679) at execEmbeddedViewsAction (core.js:29642)

My project:

[ash95344]

Have you found any solution for this? I am also getting same issue