Error in stanc(file = file, model_code = model_code, model_name = model_name, : parser failed badly

Summary:

The following errors occur when running “stan" function(R4.2.0，stan2.26.1)

Description:

Error in stanc(file = file, model_code = model_code, model_name = model_name, :
parser failed badly

Reproducible Steps:

In order to run the LBA model, an lba_log.stan file was created, and then loaded Stan and data in another r file. Everything was normal until the above error occurs when Stan was running

If you have a reproducible example, please include it.
The running code
rm(list=ls())
setwd("~/lba/")
#source('lba.r')
library(rstan)
#make simualated data
library(openxlsx)
#out = rlba(500,1,1,c(2,1),1,.5)
out = read.xlsx("transp1.xlsx",sheet = 1)
rt = cbind(out[,2],out[,3])
len = length(rt[,1])
#run the Stan model
fit <- stan(file = "lba_log.stan",
data = list(RT=rt,LENGTH=len,NUM_CHOICES=1),
warmup = 75,
iter = 150,
chains = 3)

Start with the R script's stan(file = "lba_log.stan", ...) call and inspect the referenced lba_log.stan model, which is not included in the report. Reproduce the failure with R 4.2.0, rstan 2.26.1, and the listed inputs; done requires an actionable parser diagnosis or a confirmed correction.