It looks like an issue with the HLS player than the is Empty block. From what I understand, the “error” block is null instead of "".
Can you try showing the “error” block in an alert? If you see the text *nothing*, then it means that the block is returning null.
I’m getting the same error with Video player and Video picker and it’s the picker that presents this error
Edit, depends on which program I choose to select the source with, in my case Google Photo or Gallery, if Photo then all is ok, if Gallery and if source is on my device all ok else error