If during operation some action (for example, delete action) became failed, then got following traceback in logs:
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 851, in emit
msg = self.format(record)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 724, in format
return fmt.format(record)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 464, in format
record.message = record.getMessage()
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 328, in getMessage
msg = msg % self.args
TypeError: not all arguments converted during string formatting
It happens because of following line:
https://github.com/openstack/horizon/blob/master/horizon/tables/actions.py#L823
