checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^
checkRd: (-1) fit_stm.Rd:25: Lost braces
    25 | \item{xcov}{Either a \[stats]{formula} with an empty left-hand side specifying external covariates
       |                              ^