Isn’t that also the one where a sensor imploded and caused a chain reaction that destroyed like a third of the other sensors?

Yes, except about half. This[1] article goes into how and why, without the fluff.

The chain reaction escalated uncontrollably, and within ten seconds, approximately 6,800 of the 11,129 PMTs were destroyed.

[1]: https://physicscommunication.ie/neutrino-detector-in-peril-t...