ERROR 1146：can not download all ucsc header for hg38

[HandsYe]

Fetching tables..
Download UCSC tables...

• Output dir: /share/home/yh/software/graphviz/yarden-rnaseqlib-269114a/test/pipeline_init/hg38/ucsc
  Downloading all UCSC headers for hg38
• Output dir: /share/home/yh/software/graphviz/yarden-rnaseqlib-269114a/test/pipeline_init/hg38/ucsc/headers
  Downloading header for knownGene (hg38)
  Downloading header for kgXref (hg38)
  Downloading header for knownToEnsembl (hg38)
  Downloading header for knownAlt (hg38)
  Downloading header for knownIsoforms (hg38)
  Downloading header for ensGene (hg38)
  ERROR: Failed to get header.
  Standard output was:
  Standard error was:
  ERROR 1146 (42S02) at line 1: Table 'hg38.ensGene' doesn't exist
  Traceback (most recent call last):
  File "/share/home/yh/bin/rna_pipeline.py", line 190, in
  main()
  File "/share/home/yh/bin/rna_pipeline.py", line 186, in main
  init_params=init_params)
  File "/share/home/yh/bin/rna_pipeline.py", line 101, in initialize_pipeline
  base_obj.initialize()
  File "/share/apps/python2/python2/lib/python2.7/site-packages/rnaseqlib/RNABase.py", line 213, in initialize
  self.download_tables()
  File "/share/apps/python2/python2/lib/python2.7/site-packages/rnaseqlib/RNABase.py", line 135, in download_tables
  self.output_dir)
  File "/share/apps/python2/python2/lib/python2.7/site-packages/rnaseqlib/tables.py", line 1206, in download_ucsc_tables
  download_all_ucsc_headers(genome, ucsc_tables, output_dir)
  File "/share/apps/python2/python2/lib/python2.7/site-packages/rnaseqlib/tables.py", line 1114, in download_all_ucsc_headers
  header_str = "\t".join(header)
  TypeError: can only join an iterable