my team is also experiencing this issue but for us it has been appearing at seemingly random times, and then the issue disappears.
Currently the we have two versions of the code, on works one throws CANMessageNotFound
However i cannot figure out what the difference is that is causing the error, as they should both be doing effectively the same thing
Anyway, our code is at
https://github.com/cougarTech2228/Dr...team2228/robot
(the working code that is, the error inducing version is in the master branch)
(warning the code may have changed since this post)