crash with installing 18.04 on enabeling partition "format" flag...
Traceback (most recent call last):
File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/PartitionModel.py",
line 66, in setData
item.partman_column_format_toggled(value.toBool())
AttributeError: 'int' object has no attribute 'toBool'
.