error with already compiled stored models

Summary:

I'm getting an error quite often when the rds of a model is saved.

Description:

This:

N <- 10000
mu <- .002
sigma <- .0004
rt <- 1/rnorm(N, mu, sigma) 
fit_rec <- stan(normal_recrt.stan, data = list(N = N, recRT = 1/rt))

If the model was already ran (and stored), sometimes produces this error.

Error in if (!file.exists(file.rds) || (mtime.rds <- file.info(file.rds)$mtime) <  : 
  missing value where TRUE/FALSE needed

Here is the model and the stored model in rds: normal_recrt.zip

Reproducible Steps:

I cannot really reproduce it, it just happens and then I remove the rds file and continues working. I'm mostly running the models as part of a bookdown, and I get that error a lot!. But once I get it, the stan() command will give me errors until I delete the rds file.

RStan Version:

‘2.26.3’

R Version:

R version 4.1.1 (2021-08-10)

Operating System:

Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04.3 LTS

Start with the stan() call and the supplied normal_recrt.zip reproduction, then trace how an already stored model is checked before reuse. Investigate the file.exists/file.info condition shown in the error and verify behavior on the listed RStan, R, and Ubuntu versions; done means the stored-model path no longer fails, or the failure has a reliable reproduction.