Re: Help with the "Attempted to deference zero pointer" Error

[Gabriel Ferreira]

Hi Àngele,

Without the actual example, I can't possibly know that. You'd need to debug and find out by yourself. This example doesn't use many advanced features. Not sure it is the same for the one you're working on.

Best regards,

Gabriel.

On Monday, February 23, 2026 at 4:53:46 PM UTC+1 hafaie...@gmail.com wrote:

Tried to create Parabolic Antennas for both Gnb and UE :

// Override the default antenna model with ParabolicAntennaModel

        nrHelper->SetUeAntennaTypeId(ParabolicAntennaModel::GetTypeId().GetName());

        nrHelper->SetGnbAntennaTypeId(ParabolicAntennaModel::GetTypeId().GetName());

        // Configure Friis propagation loss model before assign it to band

        channelHelper->ConfigurePropagationFactory(FriisPropagationLossModel::GetTypeId());

I followed the same approach as the following file: 

However I get the  "Attempted to deference zero pointer" Error but i don't know why?

Thank you in advance