Envelope Distort Disappearing
I am working with the envelope distort with mesh tool and one of my envelopes just disapeared. It remains in the layers pannel but it is empty and the text that was being warped is gone. I don't recall if this happened after I reopened the file or if it happened on the spot, but I have had it happen on the spot before as I was working with it.
Why is this happening and how can I recover my work? Thanks.

This is how it appears in the layers pannel and nothing appears on the canvas.
