Running examples in 'isobxr-Ex.R' failed
The error most likely occurred in:

> ### Name: run_isobxr
> ### Title: Run isobxr stable isotope box model
> ### Aliases: run_isobxr
> 
> ### ** Examples
> 
> # Example 1. {ABC}, closed, balanced
> # for more information see tutorial at
> # https://ttacail.github.io/isobxr_web/vgn_04_Run_isobxr_tutorial.html#22_Run_the_model
> 
> # This is an example using the tutorial files embedded in package data
> # It can be run as such.
> run_isobxr(workdir = "/Users/username/Documents/1_ABC_tutorial",
+            SERIES_ID = "ABC_closed_balanced", # series ID of the set of runs
+            flux_list_name = "Fx1_ABC_closed_bal", # which flux list from FLUXES sheet
+            coeff_list_name = "a1", # which coefficients list from COEFFS sheet
+            t_lim = 2500, # how long do I want to run
+            nb_steps = 250, # how many steps over this run duration
+            time_units = c("d", "yr"), # run time units (days), plot time units (years)
+            to_DIGEST_evD_PLOT = FALSE, # do not export plots as pdf files
+            to_DIGEST_CSV_XLS = FALSE, # do not export datasets as csv and xlsx files
+            to_DIGEST_DIAGRAMS = FALSE) # do not export diagrams as pdf files
________________________________________________________________________________
ℹ workdir: no workdir.
  You are using the tutorial mode (isobxr embedded tutorial files).
  The default outputs are limited and can't be exported.
________________________________________________________________________________
– All boxes are FINITE
– Running ana_slvr (balanced finite boxes)
Error in `getppid()`:
! Can't query parent pid.
Backtrace:
     ▆
  1. ├─isobxr::run_isobxr(...)
  2. │ └─rlang::inform("________________________________________________________________________________")
  3. │   ├─base::withRestarts(...)
  4. │   │ └─base (local) withOneRestart(expr, restarts[[1L]])
  5. │   │   └─base (local) doWithOneRestart(return(expr), restart)
  6. │   ├─base::cat(msg, file = .file %||% default_message_file())
  7. │   ├─.file %||% default_message_file()
  8. │   └─rlang:::default_message_file()
  9. │     └─rlang:::is_rstudio()
 10. │       ├─Sys.getenv("RSTUDIO_SESSION_PID") %in% ...
 11. │       └─rlang:::getppid()
 12. └─rlang::abort(message = message)
Execution halted