https://gitlab.synchro.net/main/sbbs/-/issues/1017#note_7907
This appears to be a problem with the map, feel free to use the map editor to find where this is being called... it's almost certainly intended to be calling "vehicle", not "vehicles".
--- SBBSecho 3.32-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)