ERROR: bag file [2021-01-28-10-27-52.bag] does not exist

In Chapter 2, the command given for calling the .bag has a given name, which will always be incorrect since everyone who does the course will have a later date and time. I suggest changing from:
rostopic echo -b 2021-01-28-10-27-52.bag -p /odom > velocity_data.csv
rostopic echo -b <your_filename>.bag -p /odom > velocity_data.csv

Hey Jordi,

That point is mighty valid! We’ll change the course to indicate that.

Update 12:07 GMT, 16/09/2022: The notebook has been corrected.

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