Error(s) in re-building vignettes:
  ...
--- re-building ‘SimuChemPC_vignette.Rnw’ using Sweave
Loading required package: rcdklibs
Loading required package: rJava
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by RJavaTools to method java.util.Collections$UnmodifiableCollection$1.next()
WARNING: Please consider reporting this to the maintainers of RJavaTools
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
 ----------- FAILURE REPORT -------------- 
 --- failure: the condition has length > 1 ---
 --- srcref --- 
: 
 --- package (from environment) --- 
SimuChemPC
 --- call from context --- 
normalize(yTrain)
 --- call from argument --- 
if (class(x) == "data.frame") {
    sigma = sapply(x_norm, sd)
} else {
    sigma = sd(x_norm)
}
 --- R stacktrace ---
where 1: normalize(yTrain)
where 2: trainChemPC(xTrain, yTrain)
where 3: eval(expr, .GlobalEnv)
where 4: eval(expr, .GlobalEnv)
where 5: withVisible(eval(expr, .GlobalEnv))
where 6: doTryCatch(return(expr), name, parentenv, handler)
where 7: tryCatchOne(expr, names, parentenv, handlers[[1L]])
where 8: tryCatchList(expr, classes, parentenv, handlers)
where 9: tryCatch(expr, error = function(e) {
    call <- conditionCall(e)
    if (!is.null(call)) {
        if (identical(call[[1L]], quote(doTryCatch))) 
            call <- sys.call(-4L)
        dcall <- deparse(call)[1L]
        prefix <- paste("Error in", dcall, ": ")
        LONG <- 75L
        sm <- strsplit(conditionMessage(e), "\n")[[1L]]
        w <- 14L + nchar(dcall, type = "w") + nchar(sm[1L], type = "w")
        if (is.na(w)) 
            w <- 14L + nchar(dcall, type = "b") + nchar(sm[1L], 
                type = "b")
        if (w > LONG) 
            prefix <- paste0(prefix, "\n  ")
    }
    else prefix <- "Error : "
    msg <- paste0(prefix, conditionMessage(e), "\n")
    .Internal(seterrmessage(msg[1L]))
    if (!silent && isTRUE(getOption("show.error.messages"))) {
        cat(msg, file = outFile)
        .Internal(printDeferredWarnings())
    }
    invisible(structure(msg, class = "try-error", condition = e))
})
where 10: try(withVisible(eval(expr, .GlobalEnv)), silent = TRUE)
where 11: evalFunc(ce, options)
where 12: tryCatchList(expr, classes, parentenv, handlers)
where 13: tryCatch(evalFunc(ce, options), finally = {
    cat("\n")
    sink()
})
where 14: driver$runcode(drobj, chunk, chunkopts)
where 15: utils::Sweave(...)
where 16: engine$weave(file, quiet = quiet, encoding = enc)
where 17: doTryCatch(return(expr), name, parentenv, handler)
where 18: tryCatchOne(expr, names, parentenv, handlers[[1L]])
where 19: tryCatchList(expr, classes, parentenv, handlers)
where 20: tryCatch({
    engine$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 21: tools:::buildVignettes(dir = "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/SimuChemPC.Rcheck/vign_test/SimuChemPC", 
    ser_elibs = "/home/hornik/tmp/scratch/RtmpEQk03u/file8fc45e21a9a.rds")

 --- value of length: 2 type: logical ---
[1] FALSE FALSE
 --- function from context --- 
function (x) 
{
    mu = colMeans(x)
    x_norm = sweep(x, length(dim(x)), mu, FUN = "-")
    if (class(x) == "data.frame") {
        sigma = sapply(x_norm, sd)
    }
    else {
        sigma = sd(x_norm)
    }
    sigma[sigma == 0] = 1
    norm = sweep(x_norm, length(dim(x)), sigma, FUN = "/")
    return(list(norm, mu, sigma))
}
<bytecode: 0x55ee62a4c268>
<environment: namespace:SimuChemPC>
 --- function search by body ---
Function normalize in namespace SimuChemPC has this body.
 ----------- END OF FAILURE REPORT -------------- 

Error: processing vignette 'SimuChemPC_vignette.Rnw' failed with diagnostics:
 chunk 9 
Error in if (class(x) == "data.frame") { : the condition has length > 1

--- failed re-building ‘SimuChemPC_vignette.Rnw’

SUMMARY: processing the following file failed:
  ‘SimuChemPC_vignette.Rnw’

Error: Vignette re-building failed.
Execution halted