ERROR: Cannot load message class for [speech_control/command]. Are your messages built?
ubuntu14.04 ROS indigoubuntu
問題：ui
執行查看指定消息的命令，出現下面的錯誤提示，找不到該消息類型。編譯
~$ rostopic echo /speech/command class
ERROR: Cannot load message class for [speech_control/command]. Are your messages built?ubuntu14.04
解決：command
將ros 工做空間中的 devel 和 build 兩個文件夾刪除，而後從新編譯，執行 catkin_make，便可。top
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