在github下载下来了代码,在按照官网构建 PX4 SITL 目标并测试环境的时候,出现以下错误:ninja: error: 'src/lib/events/libevents/events/common.json', needed by 'events/common_with_enums.json', missing and no known rule to make it make: *** [Makefile:232: px4_sitl] Error 1,针对这一错误,执行了git clone https://github.com/mavlink/libevents.git --recursive这一操作,还是会报同样的错误,应该怎么解决?