Posted by LordOfBikes on Nov 30, 2023; 12:53pm
URL: https://forum.librecad.org/hatch-tp5723922p5723925.html

The ... in the message tells the exact coordinates where the gap is located.
Thus you can zoom in and find the involved entities by X/Y coordinates.
If there are multiple entities you can use Properties or Attributes tool to find the layer of the nearby entities.
When there are too much entities on the coordinates, follow @flywire's advice.