The fingerprint option is gone? Do you mean you are not able to add fingerprints or unlock the phone using fingerprints? In that case, it might be a temporary issue with the fingerprint reader or something more saddening, like a hardware issue.
That happened to me on two phones in the past. Restarting a few times fixed it on one phone while the other needed a full factory reset. So, you can consider doing that. Such a thing was not done with an update though, and if that happened after the update, then it is indeed a coincidence.
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