use cherry as mininet controller got a error

[zboya]

I start cherry and start mininet sudo mn --controller remote , cherry get some error, please help, thanks!
log:

Apr 25 12:00:41 ubuntu cherry[18915]: DEBUG: network.OnPacketIn: PACKET_IN is received (device=1, inport=1, reason=0, tableID=0, cookie=9223372036854775808) (TID=24)
Apr 25 12:00:41 ubuntu cherry[18915]: DEBUG: l2switch.processPacket: PACKET_IN.. Ingress=1:1, SrcMAC=4e:54:81:d2:27:26, DstMAC=33:33:00:00:00:02 (TID=24)
Apr 25 12:00:41 ubuntu cherry[18915]: ERROR: transceiver.Run: failed to dispatch the packet: locating a node (MAC=33:33:00:00:00:02): querying host location to the database: Error 1146: Table 'of_test.switch' doesn't exist (TID=24)
Apr 25 12:00:43 ubuntu cherry[18915]: ERROR: monitor.func1: failed to send an alarm email: 550 5.7.606 Access denied, banned sending IP [119.139.199.121]. To request removal from this list please visit https://sender.office.com/ and follow the directions. For more information please go to  http://go.microsoft.com/fwlink/?LinkID=526655 (AS16012609) [PU1APC01FT036.eop-APC01.prod.protection.outlook.com] (TID=9)