"The simulation has failed" error in Bizagi Modeler 4.0

I am trying to run the simulation using the recently released Bizagi Modeler 4.0 .

In fact, I was very happy to hear that this version includes free simulation features, but I keep getting the following error:

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"The simulation has failed.

Please ensure that your model is compliant to the BPMN2.0 standard and that is supported by the Simulation engine".

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I have attached a screenshot of the error.

A few years ago, the Bizagi company provided x32 Bits modeler program in order to solve this phenomenon.