Add actor error convenience macro

[austinabell]

Summary of changes
Changes introduced in this pull request:

• Was a change I made in my wip VM updates, but figured I would backport so it's available if anyone needs sooner

Not going to retroactively go through actors to switch to this, as I will just get all when I (or whoever else) make a pass through the actors

Reference issue to close (if applicable)

Closes

Other information and links

[dutterbutter]

Oh so much nicer than writing it out each time.