无效的 roslaunch XML 语法:格式不正确的 dji 包

Invalid roslaunch XML syntax: not well-formed dji package

当我尝试通过键入

来启动程序包时

roslaunch dji_sdk sdk.launch

启动文件内容所在:

launch>
    <node pkg="dji_sdk" type="dji_sdk_node" name="dji_sdk" output="screen">
    <!-- node parameters -->
    <param name="serial_name" type="string" value="/dev/ttyTHS0"/>
    <param name="baud_rate" type="int" value="921600"/>
    <param name="app_id" type="int" value="1079440"/>
    <param name="app_version" type="int" value="1"/>
    <param name="align_time" type="bool" value="false"/>
    <param name="enc_key" type="string" value="39d353a8e9ad01b6c659111904bae57ebb138785aa5159699383f28da3f56563"/>
    <param name="use_broadcast" type="bool" value="false"/>
    </node>
</launch>

它给我这个错误:

Invalid roslaunch XML syntax: syntax error: line 1, column 0
The traceback for the exception was written to the log file

此处的错误是因为第一行缺少 <。