Cannot dereference iterator at end of result set! ROS2

I have error: Cannot dereference iterator at end of result set!

This seems to be a error caused due to rosbag segmention.

YAML file

rosbag2_bagfile_information:

version: 4

storage_identifier: sqlite3

relative_file_paths:

- lidar_2021-08-23_11-42-50_0.db3

- lidar_2021-08-23_11-42-50_1.db3

- lidar_2021-08-23_11-42-50_2.db3

- lidar_2021-08-23_11-42-50_3.db3

- lidar_2021-08-23_11-42-50_4.db3

- lidar_2021-08-23_11-42-50_5.db3

- lidar_2021-08-23_11-42-50_6.db3

- lidar_2021-08-23_11-42-50_7.db3

- lidar_2021-08-23_11-42-50_8.db3

- lidar_2021-08-23_11-42-50_9.db3

- lidar_2021-08-23_11-42-50_10.db3

- lidar_2021-08-23_11-42-50_11.db3

- lidar_2021-08-23_11-42-50_12.db3

- lidar_2021-08-23_11-42-50_13.db3

- lidar_2021-08-23_11-42-50_14.db3

- lidar_2021-08-23_11-42-50_15.db3

- lidar_2021-08-23_11-42-50_16.db3

- lidar_2021-08-23_11-42-50_17.db3

- lidar_2021-08-23_11-42-50_18.db3

- lidar_2021-08-23_11-42-50_19.db3

- lidar_2021-08-23_11-42-50_20.db3

duration:

nanoseconds: 646857706117

[Karthik Reddy Vennapureddy]

Hi Manuel,

Please reach out to us through the MathWorks® Technical Support. We may need more information to help you out.

Thanks,

Karthik Reddy

[Blue Bird]

I had exactly the same problem. Please tell me how you could solve it eventually.

I can use the bagreader to retrieve all the messages with readMessages(bagreader).

However, if I use

subset = bagreader.select("Topic","/report_timer")

I will get

>> readMessages(subset,1)

Cannot dereference iterator at end of result set!

>> readMessages(subset,2)

Cannot increment result iterator beyond result set!