LVDT calculation error when uploading study dummy data

[CarlosEpiStats]

When uploading dummy ADAE and ADSL data from one study, the app fades out and the following error is shown in the console:

Warning: Error in dplyr::mutate: i In argument: `LVDT = case_when(is.na(LVDT) ~ last_date, !is.na(LVDT) ~ anytime::anydate(LVDT))`.
Caused by error in `case_when()`:
! Can't recycle `..1 (left)` (size 498) to match `..1 (right)` (size 2).

Probably the bug is inside R/calculate_and_impute_required_variables_missing_values.R

Suggested: to understand why this error happens and add a fix or display a meaningful error message.