Plugins not found

After I got the latest version, the ios app stopped finding the plugins. I started getting the following message for multiple plugins.
ERROR: Plugin 'Keyboard' not found, or is not a CDVPlugin. Check your plugin mapping in config.xml.

I am running Cordova 6.0.0
Ionic 1.7.15
cordova-ios 4.1.1

I removed and readded ios platform. I ran ionic platform update ios as well.

Did anyone experience a similar problem?

Thanks in advance