While I was investigating alog21712 I found that the ISC_LOCK Guardian node went into error at 22:43 UTC. "AttributeError: 'REFL_IN_VACUO' has no attribute 'failure' ". Seems like a code error but I don't see an log if it was fixed or just reloaded or what. I will investgate further when I get a chance.
That was my fault due to an errant button click while frantically trying to relock before your shift started. This was during initial alignment in which I had the ISC_LOCK guardian in manual mode in order to take it to DOWN. I believe I was trying to click another window below the open 'ALL LOCK STATES' window (note that the REFL_IN_VACUO button is the bottom left button in this window). I noticed it went into error trying to get to this state, but attributed it as my mistake, reloaded the node, and failed to log it since I was doing other things at the time. Once I went back to AUTO, the error state cleared.