Links not defined to convert to a tabular form

[emitanaka]

Should below be an error or warning instead?

library(edibble)
design() %>% 
  set_units(pen = 2,
            pig = 6) %>% 
  serve_table()
#> # An edibble: 0 x 2
#> # ℹ 2 variables: pen <unit(2)>, pig <unit(6)>

^{Created on 2023-07-20 with reprex v2.0.2}

[emitanaka]

make it an error