[gazebo_ros2_control]: parser error Couldn't parse parameter override rule: '--param robot_description:=<?xml version="1.0" ?>

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参考链接：gazebo_ros2_control: Parser Error Couldn't parse parameter override rule - loading tricycle_controller from ros2_control

.xacro 文件中不要有中文和注释

.yaml 文件中不要有中文和注释