[GRASS-user] v.lfp throwing missing cats error

I’m attempting to use v.lfp, after r.lfp appears to have run successfully, however I get this error. What might I be doing incorrectly?

Thanks

J

Number of centroids: 0
Number of areas: 0
Number of isles: 0
v.edit complete.
WARNING: Unable to convert category string ‘cat’ (from ‘cat’) to category
range
ERROR: Unable to get category list
ERROR: Cannot delete short segments from the output vector map