Error initializing UR3 with ur_robot_driver

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Hello guys, I'm using ROS melodic on Ubuntu 18.04 with Kernel 5.3.0.59-generic a UR3 Robot

right now I'm trying to run ROS on a UR3. I've already installed the external Control on URCaps, and it's shown on the HMI. (I havn't installed a realtime kernel right now, because I want to check if it works without, because the manual says it should work also. And I don't think that this is the reason for my problem)

I followed the guide from the "ur_robot_driver" (https://github.com/UniversalRobots/Un...) and it works until it gets to the Quick start:

if I run the code to start the robot driver :

roslaunch ur_robot_driver ur3_bringup.launch robot_ip:=131.246.xx.xxx

with the following Error:

... logging to /home/robo/.ros/log/f8a7351e-b15f-11ea-8f59-00e04c21794d/roslaunch-robo-ESPRIMO-P958-13814.log
Checking log directory for disk usage. This may take a while.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

xacro: in-order processing became default in ROS Melodic. You can drop the option.
started roslaunch server http://robo-ESPRIMO-P958:36795/

SUMMARY
========

PARAMETERS
 * /controller_stopper/consistent_controllers: ['joint_state_con...

 * /force_torque_sensor_controller/publish_rate: 125

 * /force_torque_sensor_controller/type: force_torque_sens...
 * /hardware_control_loop/loop_hz: 125
 * /hardware_interface/joints: ['shoulder_pan_jo...
 * /joint_group_vel_controller/joints: ['shoulder_pan_jo...
 * /joint_group_vel_controller/type: velocity_controll...
 * /joint_state_controller/publish_rate: 125
 * /joint_state_controller/type: joint_state_contr...
 * /pos_traj_controller/action_monitor_rate: 10
 * /pos_traj_controller/constraints/elbow_joint/goal: 0.1
 * /pos_traj_controller/constraints/elbow_joint/trajectory: 0.2
 * /pos_traj_controller/constraints/goal_time: 0.6
 * /pos_traj_controller/constraints/shoulder_lift_joint/goal: 0.1
 * /pos_traj_controller/constraints/shoulder_lift_joint/trajectory: 0.2
 * /pos_traj_controller/constraints/shoulder_pan_joint/goal: 0.1
 * /pos_traj_controller/constraints/shoulder_pan_joint/trajectory: 0.2
 * /pos_traj_controller/constraints/stopped_velocity_tolerance: 0.05
 * /pos_traj_controller/constraints/wrist_1_joint/goal: 0.1
 * /pos_traj_controller/constraints/wrist_1_joint/trajectory: 0.2
 * /pos_traj_controller/constraints/wrist_2_joint/goal: 0.1
 * /pos_traj_controller/constraints/wrist_2_joint/trajectory: 0.2
 * /pos_traj_controller/constraints/wrist_3_joint/goal: 0.1
 * /pos_traj_controller/constraints/wrist_3_joint/trajectory: 0.2
 * /pos_traj_controller/joints: ['shoulder_pan_jo...
 * /pos_traj_controller/state_publish_rate: 125
 * /pos_traj_controller/stop_trajectory_duration: 0.5
 * /pos_traj_controller/type: position_controll...
 * /robot_description: <?xml version="1....
 * /robot_status_controller/handle_name: industrial_robot_...
 * /robot_status_controller/publish_rate: 10
 * /robot_status_controller/type: industrial_robot_...
 * /rosdistro: melodic
 * /rosversion: 1.14.5
 * /scaled_pos_traj_controller/action_monitor_rate: 10
 * /scaled_pos_traj_controller/constraints/elbow_joint/goal: 0.1
 * /scaled_pos_traj_controller/constraints/elbow_joint/trajectory: 0.2
 * /scaled_pos_traj_controller/constraints/goal_time: 0.6
 * /scaled_pos_traj_controller/constraints/shoulder_lift_joint/goal: 0.1
 * /scaled_pos_traj_controller/constraints/shoulder_lift_joint/trajectory: 0.2
 * /scaled_pos_traj_controller/constraints/shoulder_pan_joint/goal: 0.1
 * /scaled_pos_traj_controller/constraints/shoulder_pan_joint/trajectory: 0.2
 * /scaled_pos_traj_controller/constraints/stopped_velocity_tolerance: 0.05
 * /scaled_pos_traj_controller/constraints/wrist_1_joint/goal: 0.1
 * /scaled_pos_traj_controller/constraints/wrist_1_joint/trajectory: 0.2
 * /scaled_pos_traj_controller/constraints/wrist_2_joint/goal: 0.1
 * /scaled_pos_traj_controller/constraints/wrist_2_joint/trajectory: 0.2
 * /scaled_pos_traj_controller/constraints/wrist_3_joint/goal: 0.1
 * /scaled_pos_traj_controller/constraints/wrist_3_joint/trajectory: 0.2
 * /scaled_pos_traj_controller/joints: ['shoulder_pan_jo...
 * /scaled_pos_traj_controller/state_publish_rate: 125
 * /scaled_pos_traj_controller/stop_trajectory_duration: 0.5
 * /scaled_pos_traj_controller/type: position_controll...
 * /scaled_vel_traj_controller/action_monitor_rate: 10
 * /scaled_vel_traj_controller/constraints/elbow_joint/goal: 0.1
 * /scaled_vel_traj_controller/constraints/elbow_joint/trajectory: 0.1
 * /scaled_vel_traj_controller/constraints/goal_time: 0.6
 * /scaled_vel_traj_controller/constraints/shoulder_lift_joint/goal: 0.1
 * /scaled_vel_traj_controller/constraints/shoulder_lift_joint/trajectory: 0.1
 * /scaled_vel_traj_controller/constraints/shoulder_pan_joint/goal: 0.1
 * /scaled_vel_traj_controller/constraints/shoulder_pan_joint/trajectory: 0.1
 * /scaled_vel_traj_controller/constraints/stopped_velocity_tolerance: 0.05
 * /scaled_vel_traj_controller/constraints/wrist_1_joint/goal: 0.1
 * /scaled_vel_traj_controller/constraints/wrist_1_joint/trajectory: 0.1
 * /scaled_vel_traj_controller/constraints/wrist_2_joint/goal: 0.1
 * /scaled_vel_traj_controller/constraints/wrist_2_joint/trajectory: 0 ...