Help us track down and resolve parity problems faster with this template.

What command did you execute?

What did you expect to happen?

What's your operating system?
What's the output of which development, which staging, which production? Parity has had multiple installation channels, and it's not uncommon for an old version to be somewhere else in your path.
If installed via Homebrew, what does brew list parity output?
If installed via Rubygems, what's the gem version?