So I've been busy making lots of modifications to my views/models/controllers - came to test the app and got a blank screen. Nothing in the application.log file so must be a syntax error somewhere... But which file?
If you have read this wiki you would be aware of the yii2-detail-view extension and how it offers you an easy way to EDIT and VIEW your model data, toggle these modes, and other features. You can read the extension documentation and/or view a demo of this extension, to understand usage.