Short summary of the problem

```
> oa_base <- bf(Y ~ 1 + HOA_adj +OOAtot_adj + BBOA_adj )
> brm(oa_base, data=data, family=lognormal(),threads=6, chains=1, iter=2000, backend="cmdstanr")
Syntax error in '/var/folders/dm/b79x42n96dl9s8jpb4t3_9lc0000gp/T/Rtmpylu12l/model_d7f2057555a38c5b86087ef97f381673.stan', line 10, column 5 to column 6, parsing error:
-------------------------------------------------
8: * an integer sequence from start to end
9: */
10: int[] sequence(int start, int end) {
^
11: array[end - start + 1] int seq;
12: for (n in 1:num_elements(seq)) {
-------------------------------------------------
An identifier is expected as a function name.
Error: Syntax error found! See the message above for more information.
```

Some extra info

This is cmdstanr version 0.7.1

- CmdStanR documentation and vignettes: R Interface to CmdStan • cmdstanr
- CmdStan version: 2.34.0

brms_2.20.4

Rcpp_1.0.12