Whether your Concordia specification access a database, you have to install the corresponding database driver. Concordia 2 does not install them by default anymore, as Concordia 1 did, aiming to reduce the amount of downloaded dependencies.
Concordia 2 has a new CLI option --db-install to help with that. Example:
See Database Drivers to install the proper driver(s) for your application.
From 0.x to 1.x
1. Update your configuration file, if needed
Whether you project has a configuration file .concordiarc, open it with a text editor. If the file has a property "plugin" with the value "codeceptjs", you must change it to "codeceptjs-webdriverio".
2. Install the new plug-in
You can install any of the available plug-ins, currently codeceptjs-webdriverio or codeceptjs-appium. Example: