Fem: Handle PropertyError exception

src/Mod/Fem/femobjects/constraint_bodyheatsource.py

@@ -86,7 +86,7 @@ class ConstraintBodyHeatSource(base_fempythonobject.BaseFemPythonObject):
         for prop in self._get_properties():
             try:
                 obj.getPropertyByName(prop.name)
-            except:
+            except FreeCAD.Base.PropertyError:
                 prop.add_to_object(obj)
 
         # migrate old HeatSource property
@@ -96,5 +96,5 @@ class ConstraintBodyHeatSource(base_fempythonobject.BaseFemPythonObject):
             obj.Mode = "Dissipation Rate"
             obj.setPropertyStatus("HeatSource", "-LockDynamic")
             obj.removeProperty("HeatSource")
-        except:
+        except FreeCAD.Base.PropertyError:
             pass

src/Mod/Fem/femobjects/constraint_sectionprint.py

@@ -29,6 +29,7 @@ __url__ = "https://www.freecad.org"
 #  \ingroup FEM
 #  \brief constraint section print object
 
+from FreeCAD import Base
 from . import base_fempythonobject
 
 _PropHelper = base_fempythonobject._PropHelper
@@ -67,5 +68,5 @@ class ConstraintSectionPrint(base_fempythonobject.BaseFemPythonObject):
         for prop in self._get_properties():
             try:
                 obj.getPropertyByName(prop.name)
-            except:
+            except Base.PropertyError:
                 prop.add_to_object(obj)

src/Mod/Fem/femobjects/constraint_tie.py

@@ -114,5 +114,5 @@ class ConstraintTie(base_fempythonobject.BaseFemPythonObject):
         for prop in self._get_properties():
             try:
                 obj.getPropertyByName(prop.name)
-            except:
+            except FreeCAD.Base.PropertyError:
                 prop.add_to_object(obj)