pixel_player32026747
Have you checked out the "Known Bugs & Issues" forum thread posted above?
Did you try the suggestion provided above by Abhi?
Have you checked out the Wiki page in relation to troubleshooting the Last Tile Finder?
https://wiki.diggysadventure.com/index.php?title=Last_Tile_Finder
Some maps, especially those with looped paths, can confuse the LTF. If it's sending you in circles from door to door, the workaround is to visit each screen of the mine, running the LTF each time - if it leads to a door ignore it and go to the next screen.
Eventually you'll be on a screen where it can lead you to tiles. To make sure you visit all the screens, check the Wiki's maps for that mine.
If the last tile is somewhere inaccessible, the LTF might not work, or might direct you straight through the obstacle. Try to clear a path by moving stones, pulling levers etc.
If none of these suggestions work for you....then I suggest that you contact Pixel support directly.
Remember to check your email spam/junk folder for replies.
Don't send multiple tickets in quick succession to Pixel support otherwise their email spambot might eat them.