I am currently trying to implement a pipeline using SingleCellExperiment and DropletUtils in R. I have been getting an error for while now and I have tired everything to fix it, but nothing works. This is the code I a, currently running.

seq_data_martin <- "/home/.../GSE134809_RAW"

samples <- list.files(path = seq_data_martin, pattern = "*matrix.mtx.gz")
samples <- gsub("_matrix.mtx.gz$", "", samples)

sce <- DropletUtils::read10xCounts(
  samples = paste0("seq_data_martin/", samples, "_"),
  sample.names = samples,
  type = "prefix",
  BPPARAM = BiocParallel::MulticoreParam()
)

The error I am getting upon executing ‘sce’ is:

Error: BiocParallel errors
  31 remote errors, element index: 1, 2, 3, 4, 5, 6, ...
  0 unevaluated and other errors
  first remote error:
Error in .check_for_compressed(barcode.loc, compressed): cannot find 'seq_data_martin/GSM3972009_69_barcodes.tsv' or its gzip-compressed form

I have tried unzipping the barcodes, changing permissions of the directories but the error still persists. The barcode files are correctly located in the path:

/GSE134809_RAW$ ll | head
total 592568
drwxrwxr-x  2 localadmin localadmin     4096 May 23 14:19 ./
drwxr-xr-x 39 localadmin localadmin     4096 May 23 14:16 ../
-rw-rw-r--  1 localadmin localadmin  1155350 May 23 14:19 GSM3972009_69_barcodes.tsv.gz
-rw-rw-r--  1 localadmin localadmin   264786 Jul 24  2019 GSM3972009_69_genes.tsv.gz
-rw-rw-r--  1 localadmin localadmin 12020368 Jul 24  2019 GSM3972009_69_matrix.mtx.gz
-rw-rw-r--  1 localadmin localadmin  1920076 Jul 24  2019 GSM3972010_68_barcodes.tsv.gz
-rw-rw-r--  1 localadmin localadmin   264786 Jul 24  2019 GSM3972010_68_genes.tsv.gz
-rw-rw-r--  1 localadmin localadmin 21788688 Jul 24  2019 GSM3972010_68_matrix.mtx.gz
-rw-rw-r--  1 localadmin localadmin  2280347 Jul 24  2019 GSM3972011_122_barcodes.tsv.gz

Can someone please help me fix this error?