Argh this is an annoying error. I kept facing it as well. It’s super important to check the rollers - that is the first thing I would suggest to do. Usually, that is the problem. The rollers are probably just stuck or dirty. Otherwise, google troubleshooting for roomba. There are many guides available. I saw this [https://www.brentmorelabs.com/roomba-error-codes-troubleshooting/|one]. That’s what I did.
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