ros2_ouster_drivers: Unable to connect with firmware 2.0

Hello,

I use ros dashing. and my Lidar has the firmware 2.0 and a static ip. I have installed the driver using apt. I have configured the yaml file correctly :

ouster_driver:
  ros__parameters:
    lidar_ip: 192.168.3.200
    computer_ip: 192.168.3.100
    lidar_mode: "512x10"
    imu_port: 7503
    lidar_port: 7502
    sensor_frame: laser_sensor_frame
    laser_frame: laser_data_frame
    imu_frame: imu_data_frame

But when I try to run the launch file I get this error :

[INFO] [launch]: All log files can be found below /home/student/.ros/log/2021-01-06-15-50-00-467613-HPZ1-17665
[INFO] [launch]: Default logging verbosity is set to INFO
[INFO] [ouster_driver-1]: process started with pid [17675]
[ouster_driver-1] [INFO] [ouster_driver]: Configuring Ouster driver node.
[ouster_driver-1] [INFO] [ouster_driver]: Connecting to sensor at 192.168.3.200.
[ouster_driver-1] [INFO] [ouster_driver]: Broadcasting data from sensor to 192.168.3.100.
[ouster_driver-1] [ERROR] []: Caught exception in callback for transition 10
[ERROR] [launch_ros.actions.lifecycle_node]: Failed to make transition 'TRANSITION_CONFIGURE' for LifecycleNode '/ouster_driver'
[ouster_driver-1] [ERROR] []: Original error: vector::_M_range_check: __n (which is 0) >= this->size() (which is 0)
[ouster_driver-1] [WARN] []: Error occurred while doing error handling.
[ouster_driver-1] [ERROR] [ouster_driver]: Handing error in Ouster driver node.

Any idea what could be the problem ? It works perfectly with ROS1.

Thanks !