error in slcli summary

[scottwn]

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Expected Behavior

slcli summary should show an account summary

Actual Behavior

An unexpected error has occured:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/SoftLayer/CLI/core.py", line 182, in main
    cli.main(**kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/click/decorators.py", line 64, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/SoftLayer/CLI/summary.py", line 44, in cli
    env.fout(table)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/SoftLayer/CLI/environment.py", line 56, in fout
    self.out(self.fmt(output), newline=newline)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/SoftLayer/CLI/environment.py", line 51, in fmt
    return formatting.format_output(output, fmt=self.format)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/SoftLayer/CLI/formatting.py", line 43, in format_output
    return str(format_no_tty(data))
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/prettytable/prettytable.py", line 212, in __str__
    return self.__unicode__()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/prettytable/prettytable.py", line 218, in __unicode__
    return self.get_string()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/prettytable/prettytable.py", line 1140, in get_string
    rows = self._get_rows(options)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/prettytable/prettytable.py", line 1083, in _get_rows
    rows.sort(reverse=options["reversesort"], key=options["sort_key"])
TypeError: '<' not supported between instances of 'NoneType' and 'str'

Feel free to report this error as it is likely a bug:
    https://github.com/softlayer/softlayer-python/issues
The following snippet should be able to reproduce the error

Environment Information

Operating System: macOS 10.14.6
softlayer-python version (slcli --version): 5.8.3