Error when trying to run for the first time

[ericorruption]

The interesting part:

 ✖ Install dependencies using npm
   → spawn yarn ENOENT
   Build static assets using npm
{ Error: spawn yarn ENOENT
    at exports._errnoException (util.js:1026:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
    at onErrorNT (internal/child_process.js:359:16)
    at _combinedTickCallback (internal/process/next_tick.js:74:11)
    at process._tickCallback (internal/process/next_tick.js:98:9)
  code: 'ENOENT',
  errno: 'ENOENT',
  syscall: 'spawn yarn',
  path: 'yarn',
  spawnargs: [ 'install' ],
  stdout: '',
  stderr: '',
  failed: true,
  signal: null,
  cmd: 'yarn install',
  timedOut: false,
  killed: false,
  context: {} }
(node:98351) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 5): Error: spawn yarn ENOENT

I'm assuming this is because I don't have Yarn installed. even using --no-yarn helps.