Unit tests failing

[hrodmn]

When I run devtools::test() I get two unit test failures:

Error (test-tidy_FIA.R:73): tidy_fia produces expected output when postgis = FALSE
Error in `purrr::map(.x = table_names, .f = ~stack_tables(table_name = .x, 
    fia_db_files = fia_db_files))`: ℹ In index: 1.
Caused by error in `enc2utf8()`:
! argument is not a character vector
Backtrace:
  1. tidyFIA::tidy_fia(aoi = aoi, postgis = FALSE, table_names = want_tables)
       at test-tidy_FIA.R:73:2
 14. vroom::vroom(...)
 15. vroom:::standardise_path(file)
 16. base::as.list(enc2utf8(path))

Error (test-tidy_FIA.R:191): tidy_fia produces expected output when aoi is NULL and postgis = FALSE
Error in `purrr::map(.x = table_names, .f = ~stack_tables(table_name = .x, 
    fia_db_files = fia_db_files))`: ℹ In index: 1.
Caused by error in `enc2utf8()`:
! argument is not a character vector
Backtrace:
  1. tidyFIA::tidy_fia(...)
       at test-tidy_FIA.R:191:2
 14. vroom::vroom(...)
 15. vroom:::standardise_path(file)
 16. base::as.list(enc2utf8(path))