Task leveling error unsupported operand type(s) for +: 'int' and 'datetime.timedelta'
v6.1: project, project_plan
project - reporting> project : action task leveling , select project -> error
File "/trytond/modules/project_plan/work.py", line 653, in transition_leveling
self.record.create_leveling()
File "/trytond/modules/project_plan/work.py", line 543, in create_leveling
for sibling, delay in compute_delays(siblings):
File "/trytond/modules/project_plan/work.py", line 524, in compute_delays
[delay + sibling.duration,
TypeError: unsupported operand type(s) for +: 'int' and 'datetime.timedelta'
Fault: unsupported operand type(s) for +: 'int' and 'datetime.timedelta'