Error(s) in re-building vignettes:
  ...
--- re-building ‘tvReg.Rmd’ using rmarkdown
 ----------- FAILURE REPORT -------------- 
 --- failure: the condition has length > 1 ---
 --- srcref --- 
: 
 --- package (from environment) --- 
tvReg
 --- call from context --- 
tvPsi(x, nstep = n.ahead, ortho.cov, bw.cov = bw.cov)
 --- call from argument --- 
if (class(P) != "matrix") {
    Sigma.hat[, , t] <- as.matrix(nearPD(Sigma.hat[, , t])$mat)
    P <- try(chol(Sigma.hat[, , t]), silent = T)
}
 --- R stacktrace ---
where 1: tvPsi(x, nstep = n.ahead, ortho.cov, bw.cov = bw.cov)
where 2: .tvIRF(x = x, impulse = impulse, response = response, y.names = y.names, 
    n.ahead = n.ahead, ortho = ortho, cumulative = cumulative, 
    ortho.cov = ortho.cov, bw.cov = bw.cov)
where 3: tvIRF(model.tvVAR)
where 4: eval(expr, envir, enclos)
where 5: eval(expr, envir, enclos)
where 6: withVisible(eval(expr, envir, enclos))
where 7: withCallingHandlers(withVisible(eval(expr, envir, enclos)), warning = wHandler, 
    error = eHandler, message = mHandler)
where 8: handle(ev <- withCallingHandlers(withVisible(eval(expr, envir, 
    enclos)), warning = wHandler, error = eHandler, message = mHandler))
where 9: timing_fn(handle(ev <- withCallingHandlers(withVisible(eval(expr, 
    envir, enclos)), warning = wHandler, error = eHandler, message = mHandler)))
where 10: evaluate_call(expr, parsed$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 11: evaluate::evaluate(...)
where 12: 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$render, 
        options))
where 13: in_dir(input_dir(), evaluate(code, envir = env, new_device = FALSE, 
    keep_warning = !isFALSE(options$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 14: block_exec(params)
where 15: call_block(x)
where 16: process_group.block(group)
where 17: process_group(group)
where 18: 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$get("infile"), 
            ") ")
    })
where 19: process_file(text, output)
where 20: knitr::knit(knit_input, knit_output, envir = envir, quiet = quiet, 
    encoding = encoding)
where 21: rmarkdown::render(file, encoding = encoding, quiet = quiet, envir = globalenv(), 
    ...)
where 22: vweave_rmarkdown(...)
where 23: engine$weave(file, quiet = quiet, encoding = enc)
where 24: doTryCatch(return(expr), name, parentenv, handler)
where 25: tryCatchOne(expr, names, parentenv, handlers[[1L]])
where 26: tryCatchList(expr, classes, parentenv, handlers)
where 27: 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 28: tools:::buildVignettes(dir = "/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/tvReg.Rcheck/vign_test/tvReg", 
    ser_elibs = "/home/hornik/tmp/scratch/RtmpghIOfT/file29fc5750645b.rds")

 --- value of length: 2 type: logical ---
[1] FALSE  TRUE
 --- function from context --- 
function (x, nstep = 10, ortho.cov = "const", bw.cov = NULL, 
    ...) 
{
    if (!(class(x) == "tvvar")) 
        stop("\nPlease provide an object of class 'tvvar', generated by tvVAR().\n")
    obs <- x$obs
    nstep <- abs(as.integer(nstep))
    neq <- x$neq
    X <- x$x
    params <- NCOL(X)
    Phi <- tvPhi(x, nstep = nstep)
    horizon <- dim(Phi)[4]
    Psi <- array(0, dim = dim(Phi))
    Sigma.hat <- array(0, dim = c(neq, neq, obs))
    if (ortho.cov == "tv") {
        tkernel <- x$tkernel
        est <- x$est
        if (is.null(bw.cov)) 
            bw.cov <- bwCov(x$residuals, cv.block = x$cv.block, 
                tkernel = tkernel, est = est)
        Sigma.hat <- tvCov(x$residuals, bw = bw.cov, tkernel = tkernel, 
            est = est)
    }
    for (t in 1:obs) {
        if (ortho.cov == "const") 
            Sigma.hat[, , t] <- crossprod(x$residuals)/(obs - 
                params)
        for (i in 1:horizon) {
            P <- try(chol(Sigma.hat[, , t]), silent = T)
            if (class(P) != "matrix") {
                Sigma.hat[, , t] <- as.matrix(nearPD(Sigma.hat[, 
                  , t])$mat)
                P <- try(chol(Sigma.hat[, , t]), silent = T)
            }
            Psi[t, , , i] <- Phi[t, , , i] %*% t(P)
        }
    }
    return(list(Psi = Psi, bw.cov = bw.cov))
}
<bytecode: 0x5611806a24c0>
<environment: namespace:tvReg>
 --- function search by body ---
Function tvPsi in namespace tvReg has this body.
 ----------- END OF FAILURE REPORT -------------- 
Fatal error: the condition has length > 1