Inspector: Fix errors on type conversion

Author: KnowZero

plugindevtools/PluginDevTools/PluginDevToolsDocker.py

@@ -1494,7 +1494,11 @@ def loadItemInfo(self, obj):
                     if propName not in metaDict['properties']:
                         if propName == 'sizeHint' and obj.property('minimumSizeHint').isEmpty(): continue
                         propType = prop.typeName()
-                        propValue = pprint.pformat( obj.property(propName) )
+                        propValue = ''
+                        try:
+                            propValue = pprint.pformat( obj.property(propName) )
+                        except TypeError:
+                            propValue = "[unavailable]"
                         className = None
 
                         if inheritsFrom: