make px4_sitl jmavsim. At first if i run this makepx4_sitl jmavsimit works and i can simulate it but when i runmake px4_sitl gazeboit generates an error Generating romfs_extract.stamp FAILED: ROMFS/romfs_extract.stamp cd /home/david/PX4-Autopilot/build/px4_sitl_default/etc && /usr/bin/...