Error(s) in re-building vignettes:
  ...
--- re-building ‘ERP.Rmd’ using rmarkdown
 ----------- FAILURE REPORT -------------- 
 --- failure: the condition has length > 1 ---
 --- srcref --- 
: 
 --- package (from environment) --- 
ERP
 --- call from context --- 
ifa(Psi, B)
 --- call from argument --- 
if (class(B) == "numeric") B = matrix(B, ncol = 1)
 --- R stacktrace ---
where 1: ifa(Psi, B)
where 2: FUN(X[[i]], ...)
where 3: lapply(1:maxnbfactors, emfa, dta = dta, min.err = min.err, verbose = verbose, 
    svd.method = svd.method)
where 4: nbfactors(scmb.ols, maxnbfactors = nbfmax, diagnostic.plot = wantplot, 
    verbose = verbose, min.err = min.err, svd.method = "irlba")
where 5: erpFtest(erpdta, design, design0, nbf = NULL, pvalue = "none", 
    wantplot = TRUE)
where 6: eval(expr, envir, enclos)
where 7: eval(expr, envir, enclos)
where 8: withVisible(eval(expr, envir, enclos))
where 9: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, 
    error = eHandler, message = mHandler)
where 10: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, 
    enclos)), warning = wHandler, error = eHandler, message = mHandler))
where 11: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, 
    envir, enclos)), warning = wHandler, error = eHandler, message = mHandler)))
where 12: evaluate_call(expr, parsed$src[[i]], envir = envir, enclos = enclos, 
    debug = debug, last = i == length(out), use_try = stop_on_error != 
        2L, keep_warning = keep_warning, keep_message = keep_message, 
    output_handler = output_handler, include_timing = include_timing)
where 13: evaluate::evaluate(...)
where 14: evaluate(code, envir = env, new_device = FALSE, keep_warning = !isFALSE(options$warning), 
    keep_message = !isFALSE(options$message), stop_on_error = if (options$error && 
        options$include) 0L else 2L, output_handler = knit_handlers(options$render, 
        options))
where 15: in_dir(input_dir(), evaluate(code, envir = env, new_device = FALSE, 
    keep_warning = !isFALSE(options$warning), keep_message = !isFALSE(options$message), 
    stop_on_error = if (options$error && options$include) 0L else 2L, 
    output_handler = knit_handlers(options$render, options)))
where 16: block_exec(params)
where 17: call_block(x)
where 18: process_group.block(group)
where 19: process_group(group)
where 20: withCallingHandlers(if (tangle) process_tangle(group) else process_group(group), 
    error = function(e) {
        setwd(wd)
        cat(res, sep = "\n", file = output %n% "")
        message("Quitting from lines ", paste(current_lines(i), 
            collapse = "-"), " (", knit_concord$get("infile"), 
            ") ")
    })
where 21: process_file(text, output)
where 22: knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet, 
    encoding = encoding)
where 23: rmarkdown::render(file, encoding = encoding, quiet = quiet, envir = globalenv(), 
    ...)
where 24: vweave_rmarkdown(...)
where 25: engine$weave(file, quiet = quiet, encoding = enc)
where 26: doTryCatch(return(expr), name, parentenv, handler)
where 27: tryCatchOne(expr, names, parentenv, handlers[[1L]])
where 28: tryCatchList(expr, classes, parentenv, handlers)
where 29: tryCatch({
    engine$weave(file, quiet = quiet, encoding = enc)
    setwd(startdir)
    output <- find_vignette_product(name, by = "weave", engine = engine)
    if (!have.makefile && vignette_is_tex(output)) {
        texi2pdf(file = output, clean = FALSE, quiet = quiet)
        output <- find_vignette_product(name, by = "texi2pdf", 
            engine = engine)
    }
    outputs <- c(outputs, output)
}, error = function(e) {
    thisOK <<- FALSE
    fails <<- c(fails, file)
    message(gettextf("Error: processing vignette '%s' failed with diagnostics:\n%s", 
        file, conditionMessage(e)))
})
where 30: tools:::buildVignettes(dir = "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/ERP.Rcheck/vign_test/ERP", 
    ser_elibs = "/home/hornik/tmp/scratch/Rtmpgm2EAT/file720f17619131.rds")

 --- value of length: 2 type: logical ---
[1] FALSE FALSE
 --- function from context --- 
function (Psi, B) 
{
    if (class(B) == "numeric") 
        B = matrix(B, ncol = 1)
    Psi = as.vector(Psi)
    m = nrow(B)
    nbf = ncol(B)
    beta = B/(sqrt(Psi) %*% t(rep(1, nbf)))
    svdBeta = fast.svd(beta)
    theta = svdBeta$u * (rep(1, m) %*% t(svdBeta$d/sqrt(1 + svdBeta$d^2)))
    phi = 1/sqrt(Psi)
    phitheta = theta * (phi %*% t(rep(1, ncol(theta))))
    iS = diag(phi^2) - tcrossprod(phitheta)
    thetabeta = crossprod(theta, beta)
    theta2beta = tcrossprod(theta, t(thetabeta))
    aux = beta - theta2beta
    iSB = (phi %*% t(rep(1, ncol(theta)))) * aux
    return(list(iS = iS, iSB = iSB, Phi = phi, Theta = theta))
}
<bytecode: 0x56202584cdf0>
<environment: namespace:ERP>
 --- function search by body ---
Function ifa in namespace ERP has this body.
 ----------- END OF FAILURE REPORT -------------- 
Fatal error: the condition has length > 1