How to Fix Vuex Unknown Mutation Type Error

TL;DR

Double check you spelled it mutations: and not mutation:

Specifics

Error

Despite basing my new vuex module off of another file that was working, I was getting an error in my console - [vuex] unknown mutation type:.

My Typo

When retyping the file setup, I had typed mutation: instead of mutations: - causing vuex to be unable to find my mutation!

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