na_if() error in process_attached_files

[AliciaMstt]

Viktoria is having this issue:

Error in `mutate()`:
ℹ In argument: `IntroductionYear = (structure(function (..., .x = ..1, .y = ..2, . = ..1)
  ...`.
Caused by error in `na_if()`:
! Can't convert `y` <character> to match type of `x` <logical>.
Run `rlang::last_trace()` to see where the error occurred.
> rlang::last_trace()
<error/dplyr:::mutate_error>
Error in `mutate()`:
ℹ In argument: `IntroductionYear = (structure(function (..., .x = ..1, .y = ..2, . = ..1)
  ...`.
Caused by error in `na_if()`:
! Can't convert `y` <character> to match type of `x` <logical>.

When using process_attached_files on the file "australia__3201ddb0-7017-4420-b560-4c34d1759767__AustraliaLitoriabooroolongensisCatherineGrueber-21_33_0.txt"