R: as.character(x) error trough running INLA model

General
1

Dear All,

I am trying to run the below code in R but I got an error message:

install.packages("INLA", repos=c(getOption("repos"), INLA="https://inla.r-inla-download.org/R/testing"), dep=TRUE)
df=read.xlsx("E:/data.xlsx", sheetName = "data", header=TRUE)
result<- inla(Count ~ Year + f(iYear, model='ar1'), family=poisson, data=df)

Error in `as.character(x)` : 
  cannot coerce type 'closure' to vector of type 'character'

Any help would be highly appreciated.
2

This message in this case basically means that one of your arguments is meant to be a character string, but isn't quoted (thus it being interpreted as type closure). I don't have the INLA package installed (and can't quite figure out how to navigate to its man pages on the r-inla site), but looking at code in the tutorial below, it seems that the family argument should be quoted:

inla(y ~ x, family = c("gaussian"), data = data, control.predictor = list(link = 1))
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