Errors about orekit.JavaError

When I implemented orekit in python, the following error occurred, in which final_Dt has been set to the form of “1*3600.”.

Hi @chu1995.

Polymorphism of java has some problems in python, sometimes you need to do the conversion by .cast_. Please check the type of numProp, use print(type(numProp)).

The method propagate() is exactly defined in the interface org.orekit.propagation.Propagator.

Thanks for your answer, after using print(type(numProp)), I got TypeError: ‘OrbitType’ object is not callable.