@ 2021-03-26 14:40:19: Read the chain file:  /grid/vakoc/data/oeldemer/hg19ToHg38.over.chain.gz
Traceback (most recent call last):
  File "/root/.local/bin/CrossMap.py", line 233, in <module>
    (mapTree,targetChromSizes, sourceChromSizes) = read_chain_file(chain_file)
  File "/root/.local/lib/python3.6/site-packages/cmmodule/utils.py", line 275, in read_chain_file
    for line in ireader.reader(chain_file):
  File "/root/.local/lib/python3.6/site-packages/cmmodule/ireader.py", line 26, in reader
    for l in nopen(fname):
  File "/root/.local/lib/python3.6/site-packages/cmmodule/ireader.py", line 19, in nopen
    else gzip.open(f, mode) if f.endswith((".gz", ".Z", ".z")) \
  File "/sonas-hs/it/hpc/home/easybuild/install_prod/software/MPI/GCC/7.3.0-2.30/OpenMPI/3.1.1/Python/3.6.6/lib/python3.6/gzip.py", line 53, in open
    binary_file = GzipFile(filename, gz_mode, compresslevel)
  File "/sonas-hs/it/hpc/home/easybuild/install_prod/software/MPI/GCC/7.3.0-2.30/OpenMPI/3.1.1/Python/3.6.6/lib/python3.6/gzip.py", line 163, in __init__
    fileobj = self.myfileobj = builtins.open(filename, mode or 'rb')
FileNotFoundError: [Errno 2] No such file or directory: '/grid/vakoc/data/oeldemer/hg19ToHg38.over.chain.gz'