Upgrade Expo CLI have unknown error --assetPlugins : <p>I upgrade to latest Expo CLI 2.19.2 and tried upgrade my expo application using SDK 33. </p>

<p>When I called expo start, i have a message saying: </p>

<blockquote>
  <p>Opening DevTools in the browser... (press shift-d to disable) error: unknown option `--assetPlugins'</p>
  
  <p>Metro Bundler process exited with code 1 Set EXPO_DEBUG=true in your
  env to view the stack trace.</p>
</blockquote>

<p>I tried to set EXPO_DEBUG=true on Mac but doesn't show any debugging details when running expo start again.</p>

<p>I found it i should called export EXPO_DEBUG=true </p>

<p>Here is additional message:</p>

<blockquote>
  <p>error: unknown option `--assetPlugins'</p>
  
  <p>Metro Bundler process exited with code 1 Error: Metro Bundler process
  exited with code 1
      at ChildProcess. (/@expo/xdl@54.1.2/src/Project.js:1598:16)
      at Generator.next ()
      at step (/Users/simonlam/.nvm/versions/node/v11.6.0/lib/node_modules/expo-cli/node_modules/@expo/xdl/build/Project.js:2347:191)
      at /Users/simonlam/.nvm/versions/node/v11.6.0/lib/node_modules/expo-cli/node_modules/@expo/xdl/build/Project.js:2347:437
      at new Promise ()
      at ChildProcess. (/Users/simonlam/.nvm/versions/node/v11.6.0/lib/node_modules/expo-cli/node_modules/@expo/xdl/build/Project.js:2347:99)
      at ChildProcess.packagerProcess.once (/@expo/xdl@54.1.2/src/Project.js:1595:5)
      at Object.onceWrapper (events.js:276:13)
      at ChildProcess.emit (events.js:188:13)
      at Process.ChildProcess._handle.onexit (internal/child_process.js:254:12)</p>
</blockquote>
