Hi, I built gr-ofdmradar successfully, but it does not show anything in "ofdm radar gui", only full white screen instead of black screen with dots for targets. In the console there is warning:

"QSocketNotifier: Can only be used with threads started with QThread
QLayout: Attempting to add QLayout "" to OFDMRadarWidget "", which already has a layout".

BTW, I can see ofdm signal in both the TX and RX sides. any suggestion to solve it.