The RBDigital Delta Sync monitor has been failing for collections across multiple Circulation Manager instances since February 18, 2020.

The script produces the following stack trace.

  Traceback (most recent call last):
   File "/var/www/circulation/core/monitor.py", line 170, in run
     new_timestamp = self.run_once(progress)
   File "/var/www/circulation/api/rbdigital.py", line 2090, in run_once
     items_transmitted, items_created = self.invoke()
   File "/var/www/circulation/api/rbdigital.py", line 2128, in invoke
     return self.api.populate_delta()
   File "/var/www/circulation/api/rbdigital.py", line 1445, in populate_delta
     [delta] = delta
  ValueError: too many values to unpack