ERROR: cannot launch node of type [.../...]: Make sure file exists in package path ... (chmod +x)

roslaunch之后报错:

ERROR: cannot launch node of type […/…]: Make sure file exists in package path … (chmod +x)

解决办法:
删掉build和devel文件夹,重新catkin_make编译生成新的build和devel
在source一下,然后roslaunch即可

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