You open a diagram in Web Portal and click on an object. Result: page cannot be found.
- The shape has not been created correctly.
- You click on the empty space on the object and not on the text.
Edit your shape in Visio. Open ShapeSheet Window for the shape and remove “PhoenixObjectGUID” from the shape and from all sub-shapes if the shape is grouped. Update all diagrams using the shape and then publish again.