See this post.
Also, LCK files typically mean that someone is in the file (or the file crashed while someone was in it). If no one is in it, open the file -- you'll probably be prompted to open with Exclusive Access -- and Save. The LCK file should go away -- if not, you can delete it.
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004