已source、编译成功

roslaunch qr_tf qr_tf.launch失败,提示:

cannot launch node of type[qr_tf/qr_tf]:cannot locate node of type [qr_tf]in package [qr_tf].Make sure file exists in package path and permission is set to execu`table chmod +X

从网上找的问题和解决办法,如:给文件权限、排除功能包重名等均已排除,还是错误