`compare_proxy`not found

Package development
1

Recently, I get following errors from doing check(). When doing test() everything passes. What could be a reason?

Error ('test-createFolders.R:15:3'): createFolders: create directory ──
Error in `get(genname, envir = envir)`: object 'compare_proxy' not found
Backtrace:
     ▆
  1. ├─testthat::expect_identical(sort(my_dirs),  c("archive", "overall", "projects")) at test-createFolders.R:15:3
  2. │ └─testthat:::expect_waldo_equal("identical", act, exp, info, ...)
  3. │   └─testthat:::waldo_compare(...)
  4. └─base::loadNamespace(x)
  5.   ├─base::namespaceImportFrom(...)
  6.   │ └─base::asNamespace(ns)
  7.   └─base::loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]])
  8.     └─base::registerS3methods(nsInfo$S3methods, package, env)
  9.       └─base (local) register_S3_method_delayed(pkg, gen, cls, fun)
 10.         └─base::registerS3method(gen, cls, fun, envir = asNamespace(pkg))
 11.           └─base::get(genname, envir = envir)

test:

test_that("createFolders: create directory", {

  temp_dir <- tempfile()
  if(dir.exists(temp_dir))
    unlink(temp_dir, recursive = TRUE)

  createFolders(temp_dir)

  my_dirs <- basename(list.dirs(temp_dir, recursive = FALSE))

  expect_identical(sort(my_dirs), c("archive", "overall", "projects"))
})

Where:

createFolders <- function(folder){

    FOLDERS <- c("projects", "overall", "archive")

    if(!dir.exists(folder))
        stop("folder exists")

    # create folder
    dir.create(campaign_folder)
    # create subfolders
    purrr::walk(file.path(folder, FOLDERS), dir.create)
}

Also I have some other tests that create xlsx document using openxlsx::write.xlsx. It seems that they fail also when using check(). Like I said, this did not happen before, it started after I've updated some R packages after installing package.