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Failed to open settings file at: Data/Asus.yaml

I am trying to run ORB_SLAM with my own drone. when typing

 roslaunch SLAM SLAM.launch

here is the launch file:

  <node name="SLAM" pkg="SLAM" type="SLAM" args="Data/ORBvoc.txt Data/Asus.yaml"/>


Then, I got a problem that has never seen before this time.

 * /rosdistro: indigo
 * /rosversion: 1.11.21



core service [/rosout] found
process[SLAM-1]: started with pid [8329]
Failed to open settings file at: Data/Asus.yaml
[SLAM-1] process has died [pid 8329, exit code 255, cmd /home/htf/orb_ws/src/SLAM/bin/SLAM Data/ORBvoc.txt 

Data/Asus.yaml __name:=SLA

M __log:=/home/htf/.ros/log/99408892-c768-11e8-954c-80a589d234a5/SLAM-1.log].
log file: /home/htf/.ros/log/99408892-c768-11e8-954c-80a589d234a5/SLAM-1*.log
all processes on machine have died, roslaunch will exit
shutting down processing monitor...
... shutting down processing monitor complete

I do find the Asus.yaml under the "Data" folder, why it will happen? does anyone know how to fix this problem? thank you in advance.