# Pastebin YYfyoZQr
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/zuul/scheduler.py", line 1228, in run
    self.process_event_queue()
  File "/usr/local/lib/python3.7/site-packages/zuul/scheduler.py", line 1333, in process_event_queue
    pipeline.manager.addChange(change, event)
  File "/usr/local/lib/python3.7/site-packages/zuul/manager/__init__.py", line 330, in addChange
    if not self.isChangeReadyToBeEnqueued(change, event):
  File "/usr/local/lib/python3.7/site-packages/zuul/manager/dependent.py", line 52, in isChangeReadyToBeEnqueued
    event=event):
  File "/usr/local/lib/python3.7/site-packages/zuul/driver/gerrit/gerritsource.py", line 50, in canMerge
    return self.connection.canMerge(change, allow_needs, event=event)
  File "/usr/local/lib/python3.7/site-packages/zuul/driver/gerrit/gerritconnection.py", line 959, in canMerge
    if not change.number:
AttributeError: 'Tag' object has no attribute 'number'