Error in `file(con, "rb")`: cannot open the connection

testthat::test_that("`allele_counter()` works as expected", {
testthat::test_that("`cellranger()` works as expected", {
testthat::test_that("`fastq_pair()` works as expected", {
testthat::test_that("`gistic2()` works as expected", {
testthat::test_that("`kraken_tools()` works as expected", {
testthat::test_that("`kraken2()` works as expected", {
testthat::test_that("`perl()` works as expected", {
testthat::test_that("`python()` works as expected", {
testthat::test_that("`seqkit()` works as expected", {
testthat::test_that("`trust4()` works as expected", {
testthat::test_that("`pipe()` method works well", {