I cannot see my model

Cloud Mason vor 8 Jahren aktualisiert von Michał Kołodziejski vor 7 Jahren 2
The graphical display of my model seems to have disappeared. I can click on the the tables and see all the columns and properties, but I cannot get the graph to display.
Wird überprüft
Does this problem still occur? The model doesn't seem to be corrupted or invalid.
No reply for 2 months, I mark the issue as "answered".