Token simulation plugin probblem

In Camunda Modeler I try to use the token simulator but I get:

Tried to access di from the businessObject. The di is available through the diagram element only.

I am on:

Camunda Modeler system information

  • Version: 5.9.0
  • Operating System: Mac OS 10.15.7
  • Plugins: bpmn-js Token Simulation
  • Execution Platform: BPMN - Camunda Platform 7