Upgrading expo to latest version
There are some precaution to take care of when upgrading expo-cli to latest version. Somehow adb that resides in your directory C:\Users\username\AppData\Roaming\npm\node_modules\expo-cli might still be lock as it is being used by another process.
Please make sure you kill adb processes before running your upgrade.
Updating to the latest version is relatively easy - just run the following commands :