command tsvmat is unrecognized

[Chul-Kyoo Jung]

Hi, I am trying to run CSDiD model for staggered policy assignments.
I was wondering if anyone could help me with how to fix this error message: command tsvmat is unrecognized while I was running the following code:
FYI, my lab is currently not connected to internet, meaning I can't update the package in easy way. I suspect that the error might be related to the update issue with the related packages because the code runs well in my personal laptop.
Thanks.

foreach policy in `POLICIES' {
    local gvar = "`G_`policy''"
    local ttl  = "`T_`policy''"

    eststo clear
    local i = 0
    foreach yvar in `OUTCOMES' {

        eststo model_`policy'_`i': csdid `yvar' `CONTROLS', ///
            ivar(uniqueid) time(year) gvar(`gvar') method(dripw) notyet ///
            cluster(uniqueid_cluster)

        estat event, estore(event_`policy'_`i') window(-6 6)

        local vartitle: variable label `yvar'
        if "`vartitle'"=="" local vartitle "`yvar'"
        csdid_plot, title("`ttl'" "Effect on `vartitle'")
        graph export "$OUT_GRAPHS/csdid_`policy'_`yvar'.png", as(png) replace
    }

    cd "$OUT_TABLES"
    capture noisily esttab event_`policy'_* using "table_event_`policy'_star.csv", ///
        b(%9.3f) se(%9.3f) star(* 0.10 ** 0.05 *** 0.01) replace compress unstack nonotes
    capture noisily esttab model_`policy'_* using "table_att_`policy'_star.csv", ///
        b(%9.3f) se(%9.3f) star(* 0.10 ** 0.05 *** 0.01) replace compress unstack nonotes
}

[Nick Cox]

Please explain the provenance of community-contributed commands you are using (FAQ Advice #12).

csdid and estout are from SSC.

tsvmat is bundled with the csdid package.

. ssc type tsvmat.ado

*! V1 Creates Temporary new variables

*capture program drop tsvmat
program define tsvmat, return
        syntax anything, name(string)
        version 7
                 
        local nx = rowsof(matrix(`anything'))
        local nc = colsof(matrix(`anything'))
        ***************************************
        // here is where the safegards will be done.
        if _N<`nx' {
            display as result "Expanding observations to `nx'"
                set obs `nx'
        }
        // here we create all variables
        foreach i in `name' {
                        local j = `j'+1
                        qui:gen `type' `i'=matrix(`anything'[_n,`j'])                    
        }
        // here is where they are renamed.

end

[Chul-Kyoo Jung]

Thanks Nick, sorry for the insufficient source information.

I am using csdid in Stata 18 and the analysis is based on firm-level business data (unbalanced panel). I will make sure of this from now.