unclear error message in `spatial_buffer_vfold_cv()`

I get the below purrr / rsplit error. I've tried a few values of buffer but am unsure what the error actually is in this case.

I suspect there's something wrong with the choice of buffer on this grid.

set.seed(0)
grid <- sf::st_make_grid(cellsize = c(1, 1), offset = c(0, 0), n = c(70, 100)) 

splits <-spatialsample::spatial_buffer_vfold_cv(
  sf::st_sf(grid),
  v = 5,
  buffer = 100,
  radius = NULL
)
Error in `purrr::map()`:
ℹ In index: 1.
Caused by error in `rsplit()`:
! At least one row should be selected for the analysis set.

Reproduce the supplied R example and start at the spatial_buffer_vfold_cv() entry point, tracing how the buffer and grid produce the rsplit() failure. Done means the same invalid or incompatible buffer situation reports a clear, actionable error instead of the generic purrr/rsplit message.