"Lock failed" help

There’s one vault where when I try to lock when exiting and wanting to close the vault there’s a pop-up message that comes up. Message says “Lock failed: Locking “(vault name)” was blocked by pending operations or open files. You can force lock this vault, however interrupting I/O may result in the loss of unsaved data”. I haven’t experienced any loss of unsaved data yet (:crossed_fingers:) and I have several vaults but this one particular vault seems to activate this pop-up message. Can only lock the vault when I force quit. Does anyone know how to solve this issue?

*Using on Mac with FUSE & latest version