Interface error - txt format not recognized

I've built an interface so end-user can input his own txt files:

However below error is returned:

Input

Error Message

Apps

Preparation

Accepted answers

Thanks @BenMoss - I modified the setup and now all works, user can input his file

Check out this post: https://community.alteryx.com/t5/Alteryx-Connect-Gallery/The-Action-tool-reports-error-that-quot-file-is-not-a-known/td-p/61934

Is the idea that the user can input any file type or a just .txt?

The problem here is that when configuring a .txt there are a series of additional layers that need to be defined by the user, such as the delimiter type.

In comparison such functionality is not needed when working with a .yxdb for instance.

Thanks @BenMoss - I modified the setup and now all works, user can input his file