GudPy sample import fails

[rhinoella]

When importing a sample file it fails with the output:

Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is created.
Designer: The enumeration-type property verticalScrollBarPolicy could not be read.
/home/nimrod_mgr/src/GudPy/gudpy/gudpy_gui.py:13: DeprecationWarning: 'exec_' will be removed in the future. Use 'exec' instead.
  sys.exit(self.exec_())
H-CSA
D-CSA
8mm_empty_quartz
HD-CSA
H-CSA+25mg/mL_HiPCO
Traceback (most recent call last):
  File "/home/nimrod_mgr/src/GudPy/gudpy/gui/widgets/core/gudpy_tree.py", line 290, in setData
    [s.name for s in self.gudrunFile.sampleBackground.samples],
AttributeError: 'GudrunFile' object has no attribute 'sampleBackground'. Did you mean: 'sampleBackgrounds'?