Prototype expression field

[nbenn]

No description provided.

[DivadNojnarg]

@nbenn I am trying to run simple examples from this branch:

library(blockr)
library(palmerpenguins)

stack <- new_stack(
  data_block = new_dataset_block("penguins", "palmerpenguins"),
 select_block = new_select_block(columns = "sex"),
  filter_block = new_filter_block("sex", "female")
)
serve_stack(stack)

which leads to:

Error in eval_functional_field_component: all(arg %in% names(env)) is not TRUE