I am getting the following warning My command was "pip install dronekit" WARNING: Discarding https://files.pythonhosted.org/packages/3c/aa/0449124952946f3e99c9e9e0e6cca0b5b0ac895c42261da55706860dfc9f/pymavlink-2.4.11.tar.gz#sha256=0b1265b169f809c6ca94911ad2d7649b8e087a7cc573a0a6ea62ade9bea7ca5c (from https://pypi.org/simple/pymavlink/）。命令出错，退出状态为 1：python setup.py egg_info 检查日志以获取完整的命令输出。