E/AccessibilityBridge: VirtualView node must not be the root node. (Flutter)

This was a bug in flutter engine which is now fixed in beta channel and soon will be released in next stable release.

You should just ignore these errors if possible otherwise change your flutter channel by:

flutter channel beta

Edit:

If you are using Android Studio then you can filter log. Deselecting any other option other than "Info" will remove unwanted log.