Unrecognised shape provided to GraphNode raises uncaught exception

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Stack

Warning: React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check the render method of `GraphNodeStatic`.
    in GraphNodeStatic (created by Motion)
    in g (created by Motion)
    in Motion (created by GraphNode)
    in GraphNode (created by WorkloadNode)

A nice warning too:

Warning: Failed prop type: Invalid prop shape of value dottedtriangle supplied to GraphNode, expected one of ["circle","cloud","cylinder","dottedcylinder","heptagon","hexagon","octagon","pentagon","sheet","square","triangle"].