MethodofLines - Staggered Grids - MethodError by function discretize()

Greetings,

The tutorial example on staggered grids at staggered results in the method error

MethodError: no method matching view(::Nothing, ::UnitRange{Int64})
The function `view` exists, but no method is defined for this combination of argument types.

Removing the staggered grid options from MOLFiniteDifference instead results in

Warning: The system contains interface boundaries, which are not compatible with system transformation. The system will not be transformed. Please post an issue if you need this feature.

Advice is much appreciated.