Ivalid type of item 8 Failed to read object #166316 of class IFCSTAIR Ivalid type of item 8 Failed to read object #200539 of class IFCSTAIR Ivalid type of item 8 Failed to read object #202811 of class IFCSTAIR Invalid data member 'RelatingObject' in #170156, removed. Invalid entity #170156 is removed. Invalid data member 'RelatingObject' in #206741, removed. Invalid entity #206741 is removed. Invalid data member 'RelatingObject' in #206754, removed. Invalid entity #206754 is removed. Entity #18096. Full path #(18099, 18096) Failed: api_check_entity() Entity #205271. Full path #(205273, 205271) Warning: 72 edges in closed shell have only one coedge