tests/testthat/_snaps/write.md

In readr: Read Rectangular Text Data

Error when writing list columns or matrix columns

Code
  write_csv(df, tempfile())
Condition
  Error in `cli_block()`:
  ! `x` must not contain list or matrix columns:
  x invalid columns at index(s): 3

Code
  write_csv(df2, tempfile())
Condition
  Error in `cli_block()`:
  ! `x` must not contain list or matrix columns:
  x invalid columns at index(s): 2

readr documentation built on Feb. 20, 2026, 1:07 a.m.