Error in roslaunch dvs_tracking live.launch

[hmirh]

I have tried to run EVO in Ubuntu 20.04, Neotic ROS and for Dvxplorer camera. I have error when the I want to run:

roslaunch dvs_tracking live.launch auto_trigger:=false camera_name:=DVXplorer-DXB00056 events_topic:=/dvs/events

ROS_MASTER_URI=http://localhost:11311

process[svo-1]: started with pid [23811]
process[svo_gui-2]: started with pid [23812]
process[pose_to_tf-3]: started with pid [23813]
/usr/bin/env: ‘python’: No such file or directory
[pose_to_tf-3] process has died [pid 23813, exit code 127, cmd /home/labuser/catkin_ws/src/rpg_dvs_evo_open/dvs_bootstrapping/src/pose_to_tf.py events:=/my_sensor/events remote_key:=/evo/remote_key __name:=pose_to_tf __log:=/home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/pose_to_tf-3.log].
log file: /home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/pose_to_tf-3*.log
process[dvs_mapping-4]: started with pid [23814]
process[trigger_map_expansion-5]: started with pid [23815]
/usr/bin/env: ‘python’: No such file or directory
process[dvs_tracking-6]: started with pid [23816]
[trigger_map_expansion-5] process has died [pid 23815, exit code 127, cmd /home/labuser/catkin_ws/src/rpg_dvs_evo_open/dvs_mapping/src/trigger_map_expansion.py events:=/my_sensor/events remote_key:=evo/remote_key pointcloud:=dvs_mapping/pointcloud __name:=trigger_map_expansion __log:=/home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/trigger_map_expansion-5.log].
log file: /home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/trigger_map_expansion-5*.log
process[dvs_bootstrapping-7]: started with pid [23817]
process[dvs_reconstruction-8]: started with pid [23818]
/usr/bin/env: process[tf_to_camera_marker-9]: started with pid [23819]
‘python’: No such file or directory
[tf_to_camera_marker-9] process has died [pid 23819, exit code 127, cmd /home/labuser/catkin_ws/src/rpg_dvs_evo_open/evo_utils/src/evo_utils/tf_to_camera_markers.py events:=/my_sensor/events remote_key:=/evo/remote_key __name:=tf_to_camera_marker __log:=/home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/tf_to_camera_marker-9.log].
log file: /home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/tf_to_camera_marker-9*.log
/usr/bin/env: ‘python’: No such file or directory
process[snakify-10]: started with pid [23820]
process[rqt_evo-11]: started with pid [23821]
/usr/bin/env: ‘python’: No such file or directory
[snakify-10] process has died [pid 23820, exit code 127, cmd /home/labuser/catkin_ws/src/rpg_dvs_evo_open/evo_utils/src/evo_utils/snakify.py events:=/my_sensor/events remote_key:=/evo/remote_key __name:=snakify __log:=/home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/snakify-10.log].
log file: /home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/snakify-10*.log
[rqt_evo-11] process has died [pid 23821, exit code 127, cmd /home/labuser/catkin_ws/src/rpg_dvs_evo_open/rqt_evo/scripts/rqt_evo events:=/my_sensor/events remote_key:=/evo/remote_key __name:=rqt_evo __log:=/home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/rqt_evo-11.log].
log file: /home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/rqt_evo-11*.log

REQUIRED process [dvs_tracking-6] has died!
process has died [pid 23816, exit code -11, cmd /home/labuser/catkin_ws/devel/lib/dvs_tracking/dvs_tracking_ros events:=/my_sensor/events remote_key:=/evo/remote_key pointcloud:=dvs_mapping/pointcloud __name:=dvs_tracking __log:=/home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/dvs_tracking-6.log].
log file: /home/labuser/.ros/log/fe1dcbba-d6c5-11ec-889c-c1e36d81b261/dvs_tracking-6*.log
Initiating shutdown!

[pcl::KdTreeFLANN::setInputCloud] Cannot create a KDTree with an empty input cloud!

Traceback (most recent call last):
File "/opt/ros/noetic/lib/rqt_gui/rqt_gui", line 13, in
sys.exit(main.main())
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/main.py", line 61, in main
return super(
File "/opt/ros/noetic/lib/python3/dist-packages/qt_gui/main.py", line 444, in main
app = self.create_application(argv)
File "/opt/ros/noetic/lib/python3/dist-packages/rqt_gui/main.py", line 71, in create_application
icon = QIcon(logo)
KeyboardInterrupt
W20220518 12:34:48.865370 25255 motion_correction.cpp:69] s >= 0
[pcl::KdTreeFLANN::setInputCloud] Cannot create a KDTree with an empty input cloud!
shutting down processing monitor...
... shutting down processing monitor complete
done