I was uploading a snap to the store yesterday and got this message:-
“Error generating delta: delta_tool_path must be set in subclass!
Falling back to pushing full snap…”
What does it mean? Why does it appear? Should I care?
I made it go away (I needed it to go away because it's a bit ugly appearing in a tutorial video I was making at the time) by deleting all of ~/.cache/snapcraft.