When a try to move a sale line in sale in GTK Client, have the following error:
File "/home/ccr/Documents/Adiczion/technique/.virtualenvs/Tryton-5.0/lib/python3.5/site-packages/tryton/gui/window/view_form/view/list.py", line 788, in drag_data_received
data = json.loads(selection_data)
File "/usr/lib/python3.5/json/__init__.py", line 312, in loads
s.__class__.__name__))