fix bug catch except

ubuntu_base/vc_server.py

@@ -37,6 +37,7 @@ def print_mapping_state():
     is_converged = False
 
     while True:
+        try:
             contents = ["--- New record ---"]
             is_changed = False
             for id_node in map_security_node.keys():
@@ -63,6 +64,8 @@ def print_mapping_state():
             elif time_converge != 0 and not is_converged and (time.time() - time_converge) > 10:
                 is_converged = True
                 print("Converged")
+        except RuntimeError:
+            pass
 
 
 def main():