ngx-formly: File upload explained in docs is not working.

I’m submitting a … (check one with “x”)

[x] bug report => search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request

Current behavior I don’t know I might be wrong but i have tested the file upload build in docs and it doesn’t give the file object when you upload any file to it. I have simply console log the model and it does not contain any file object. What Am i missing to do.

Expected behavior there should be a file object in the model

Minimal reproduction of the problem with instructions open the file upload explained in the docs and upload the file