rabbitmq management server 500 Error on connection delete

gistfile1.txt

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
Adding vhost 'nameko'

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
Setting permissions for 'guest' in 'nameko' to '.*', '.*', '.*'

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
accepting AMQP connection <0.9149.0> (127.0.0.1:41142 -> 127.0.0.1:5672)

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
accepting AMQP connection <0.9158.0> (127.0.0.1:41143 -> 127.0.0.1:5672)

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
closing AMQP connection <0.9158.0> (127.0.0.1:41143 -> 127.0.0.1:5672)

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
Deleting vhost 'nameko'

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
Adding vhost 'nameko'

=INFO REPORT==== 18-Aug-2014::15:37:16 ===
Setting permissions for 'guest' in 'nameko' to '.*', '.*', '.*'

=INFO REPORT==== 18-Aug-2014::15:37:17 ===
Closing connection <0.9149.0> because "Closed via management plugin"

=ERROR REPORT==== 18-Aug-2014::15:37:17 ===
AMQP connection <0.9149.0> (running), channel 0 - error:
{amqp_error,connection_forced,"Closed via management plugin",none}

=INFO REPORT==== 18-Aug-2014::15:37:17 ===
accepting AMQP connection <0.9173.0> (127.0.0.1:41144 -> 127.0.0.1:5672)

=INFO REPORT==== 18-Aug-2014::15:37:17 ===
closing AMQP connection <0.9173.0> (127.0.0.1:41144 -> 127.0.0.1:5672)

=INFO REPORT==== 18-Aug-2014::15:37:17 ===
Deleting vhost 'nameko'

=INFO REPORT==== 18-Aug-2014::15:37:17 ===
Adding vhost 'nameko'

=INFO REPORT==== 18-Aug-2014::15:37:17 ===
Setting permissions for 'guest' in 'nameko' to '.*', '.*', '.*'

=INFO REPORT==== 18-Aug-2014::15:37:17 ===
closing AMQP connection <0.9149.0> (127.0.0.1:41142 -> 127.0.0.1:5672)

=ERROR REPORT==== 18-Aug-2014::15:37:17 ===
webmachine error: path="/api/connections/127.0.0.1%3A41142%20-%3E%20127.0.0.1%3A5672"
{error,function_clause,
       [{proplists,get_value,[pid,not_found,undefined]},
        {rabbit_mgmt_wm_connection,delete_resource,2},
        {webmachine_resource,resource_call,3},
        {webmachine_resource,do,3},
        {webmachine_decision_core,resource_call,1},
        {webmachine_decision_core,decision,1},
        {webmachine_decision_core,handle_request,2},
        {rabbit_webmachine,'-makeloop/1-fun-0-',2}]}