Typically when referring to Q drops, in a suspected comm, where a word has been misspelled or, as in the case of the lowercase e anomaly in Q-Post #1778 referenced in OP's X tweet, an anomaly in spelling or usage, you can search the posts for a reference to that letter using "[e]" or "(e)" (sans quotes). In this case [e] brought up five Q-Posts containing that distinction. Post #144 seemed the most likely to contain an applicable message.

Scan carefully through post #144 for bracketed words or letters and you get --

Line #2: US

Line #5: risk

Line #17: th

Line #23: i

Line #24: s

Line #26: W

Line #28: e

Line #30: e

Line #33: k