TypeError: an integer is required (got type str)

[rollbar]

View details in Rollbar: https://rollbar.com/bmordue/nb/items/32/

Traceback (most recent call last):
  File "src/app.py", line 81, in <module>
    schedule.run_pending()
  File "/home/ben/Projects/nb/.env/lib/python3.7/site-packages/schedule/__init__.py", line 563, in run_pending
    default_scheduler.run_pending()
  File "/home/ben/Projects/nb/.env/lib/python3.7/site-packages/schedule/__init__.py", line 94, in run_pending
    self._run_job(job)
  File "/home/ben/Projects/nb/.env/lib/python3.7/site-packages/schedule/__init__.py", line 147, in _run_job
    ret = job.run()
  File "/home/ben/Projects/nb/.env/lib/python3.7/site-packages/schedule/__init__.py", line 466, in run
    ret = self.job_func()
  File "src/app.py", line 53, in periodic_add_comment_counts
    add_comment_counts()
  File "/home/ben/Projects/nb/.env/lib/python3.7/site-packages/datadog/dogstatsd/context.py", line 53, in wrapped
    def wrapped(*args, **kwargs):
  File "/home/ben/Projects/nb/src/tasks/add_comment_counts.py", line 24, in add_comment_counts
    count = nb_client.get_comment_count(url)
  File "/home/ben/Projects/nb/.env/lib/python3.7/site-packages/datadog/dogstatsd/context.py", line 53, in wrapped
    def wrapped(*args, **kwargs):
  File "/home/ben/Projects/nb/src/connectors/NewsblurConnector.py", line 85, in get_comment_count
    resp = self.request_with_backoff(req)
  File "/home/ben/Projects/nb/.env/lib/python3.7/site-packages/datadog/dogstatsd/context.py", line 53, in wrapped
    def wrapped(*args, **kwargs):
  File "/home/ben/Projects/nb/src/connectors/NewsblurConnector.py", line 142, in request_with_backoff
    sleep(self.config.get('BACKOFF_START'))
TypeError: an integer is required (got type str)