Issues with BLE_DataThroughput example project

I am trying to compile the BLE_DataThroughput example project. First, I started with CubeIDE. The program compiles for BLE central, but does not behave as expected on the hardware. For peripheral (#define CFG_BLE_CENTRAL 0) there are unknown symbols in the pre-compiler.

So I installed SW4STM32. Now both cases compile without error and #define CFG_BLE_CENTRAL 1 works as expected in hardware (output to the serial console, but does not find the other board to connect to).

However, #define CFG_BLE_CENTRAL 0 compiles as well, but does not output anything.

Do you have any hints on how to get started with the example project? Thank you very much!