Shell.Current.GoToAsync Failed with Error: java.lang.IllegalStateException: The specified child already has a parent.

Question

In my ViewModel, I had a RelayCommand to send parameters to another page.

[RelayCommand]
public async Task ReviewIt()
{
 // ...
 await Shell.Current.GoToAsync(nameof(ReviewItView), new Dictionary<string, object>{ ["key1"] = value1, ["key2"] = value2 })
}

but it failed with the exception: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

How to correct this?