Problem in simulating background cell traffic on Simu5g 1.3.0

Good morning to everyone,
I recently installed the new version of Simu5g (1.3.0) and I was trying to run the background traffic scenario developed in simulations/NR/bgTraffic. The problem is that appears an error related, I think, to the Binder module: in particular it says

<!> Dereferencing nullptr of type 'simu5g::Binder' -- in module (simu5g::BackgroundScheduler) SingleCell_Standalone.bgCell[0].bgScheduler (id=285), during network initialization

Looking into details, the error is generated when binder_ in BackgroundScheduler.h is defined as inet::ModuleRefbyPar<Binder>.

The same error occurs in simulations where a background cell traffic is implemented (for example in tutorial folder). I would ask if anyone else occurred in the same error or, if not, what could be the solution to this problem.

I am using Omnet++ 6.1, INET 4.5.4 and Simu5g 1.3.0

Thank you in advance

Reproduce the failure in simulations/NR/bgTraffic and the mentioned tutorial scenarios with OMNeT++ 6.1, INET 4.5.4, and Simu5G 1.3.0. Start with BackgroundScheduler.h, especially the binder_ ModuleRefByPar definition, and trace initialization of the BackgroundScheduler. Done means the background traffic scenario initializes without the Binder nullptr error.