Patch 583190 to CommentStreams converted from use of Revision::getTimestampFromId() to RevisionStore()->getTimestampFromId() with a comment:
Extension requires MW 1.31+, and the RevisionStore service was added in 1.31 and so is always available
However, what the patch failed to take into account is that the signature of RevisionStore()->getTimestampFromId() changed in the interim. The function no longer requires a title as the first parameter in 1.34, but it did in 1.31. So, an additional yet-to-be-determined check will be required to restore backward compatibility.
Pinging @DannyS712 for help determining the appropriate check. Also, if this change was made to other extensions, they made need a fix as well.