Issues for creating a scene with a blank character downloaded from Adobe Character Animator


I've downloaded a blank character puppet from the Adobe Character Animator Example Puppet. https://www.youtube.com/watch?v=o0qYSvxyCQ8&feature=emb_rel_pause. This is the video posted by Dave Werner where I was learning from his video. I tried to do the same steps as he did, but I have been facing some issues about not being able to create a scene because the past end of the file is not read. How can I solve this issue?
