The error of running ./case.submit

[sunxupeng]

When I started using commands/ case.submit
The following error occurred:
Client protocol gftp not enabled
Using protocol wget with user anonymous and passwd user@example.edu
Could not connect to repo 'ftp://ftp.cgd.ucar.edu/cesm/inputdata'
This is most likely either a proxy, or network issue .
Trying to download file: '../inputdata_checksum.dat' to path '/home/sxp/Library/cesm_build/inputdata_checksum.dat.raw' using NoneType protocol.
Traceback (most recent call last):
File "./case.submit", line 107, in <module>
_main_func(__doc__)
File "./case.submit", line 104, in _main_func
mail_user=mail_user, mail_type=mail_type, batch_args=batch_args)
File "/home/sxp/clm5.0/cime/scripts/Tools/../../scripts/lib/CIME/case/case_submit.py", line 157, in submit
custom_success_msg_functor=verbatim_success_msg)
File "/home/sxp/clm5.0/cime/scripts/Tools/../../scripts/lib/CIME/utils.py", line 1683, in run_and_log_case_status
rv = func()
File "/home/sxp/clm5.0/cime/scripts/Tools/../../scripts/lib/CIME/case/case_submit.py", line 155, in <lambda>
batch_args=batch_args)
File "/home/sxp/clm5.0/cime/scripts/Tools/../../scripts/lib/CIME/case/case_submit.py", line 85, in _submit
case.check_case()
File "/home/sxp/clm5.0/cime/scripts/Tools/../../scripts/lib/CIME/case/case_submit.py", line 171, in check_case
self.check_all_input_data()
File "/home/sxp/clm5.0/cime/scripts/Tools/../../scripts/lib/CIME/case/check_input_data.py", line 163, in check_all_input_data
_download_checksum_file(self.get_value("RUNDIR"))
File "/home/sxp/clm5.0/cime/scripts/Tools/../../scripts/lib/CIME/case/check_input_data.py", line 54, in _download_checksum_file
success = server.getfile(rel_path, new_file)
AttributeError: 'NoneType' object has no attribute 'getfile'
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And I use instructions： ./check_input_data --download
I can't download the data I need：
But my computer can access it：https://svn-ccsm-inputdata.cgd.ucar.edu/trunk/inputdata/