Constant error messages in 3.2.1

[HansG1]

Selection Palette produces constant error messages:
(3.2.1 on 10.14.6, maybe system related?)

Traceback (most recent call last):
File "plugin.py", line 166, in settings
self.rowSettings = list(map(lambda type: {
^^^^^^^^^^^^^^^^^^^^^^^
File "plugin.py", line 168, in
"icon": getImageViewFromPath("base/Icon=" + type[0]),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "plugin.py", line 62, in getImageViewFromPath
icon.setTemplate_(True)
^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'setTemplate_'