coding error

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Failed to add WIKIYRI (bn)
list index out of range
Traceback (most recent call last):
  File "./bumble-bee.py", line 1200, in <module>
    bee.main()
  File "./bumble-bee.py", line 1085, in main
    sites = self.get_websites(self.args.segment, self.args.site)
  File "../lib/apiary.py", line 391, in get_websites
    log_url=data_url
NameError: global name 'data_url' is not defined