Can not access through Spark web client

Dear Altruists,
I am totally new in this area… I I was exploring to the openfire server for instant messaging… I successfully installed Openfire and created some users and group from admin panel.
Then I hosted spark web client in apache server in the same machine. I am using ubuntu 14.04 64 bit. I hosted spark web at /var/www/html.

while trying to login from spark web it can not connect to server… please see the error log

2017.12.14 14:12:33 org.jivesoftware.openfire.spi.RoutingTableImpl - Removing client route 192.168.10.21/7ydjg6kjen
2017.12.14 14:12:53 org.apache.mina.filter.executor.OrderedThreadPoolExecutor - Adding event SESSION_OPENED to session 35
Queue : [SESSION_OPENED, ]

2017.12.14 14:12:53 org.apache.mina.filter.executor.OrderedThreadPoolExecutor - Adding event MESSAGE_RECEIVED to session 35
Queue : [MESSAGE_RECEIVED, ]

2017.12.14 14:12:53 org.apache.mina.filter.codec.ProtocolCodecFilter - Processing a MESSAGE_RECEIVED for session 35
2017.12.14 14:12:53 org.jivesoftware.openfire.net.SASLAuthentication - Cannot support 'JIVE-SHAREDSECRET' as it has been disabled by configuration.
2017.12.14 14:12:53 org.jivesoftware.openfire.net.SASLAuthentication - Cannot support 'GSSAPI' as the 'sasl.gssapi.config' property has not been defined.
2017.12.14 14:12:53 org.jivesoftware.openfire.net.SASLAuthentication - Cannot support 'ANONYMOUS' as it has been disabled by configuration.
2017.12.14 14:12:53 org.apache.mina.filter.executor.OrderedThreadPoolExecutor - Adding event MESSAGE_SENT to session 35
Queue : [MESSAGE_SENT, ]

2017.12.14 14:12:53 org.apache.mina.filter.executor.OrderedThreadPoolExecutor - Adding event MESSAGE_SENT to session 35
Queue : [MESSAGE_SENT, ]

2017.12.14 14:12:53 org.apache.mina.filter.executor.OrderedThreadPoolExecutor - Adding event MESSAGE_RECEIVED to session 35
Queue : [MESSAGE_RECEIVED, ]

2017.12.14 14:12:53 org.apache.mina.filter.codec.ProtocolCodecFilter - Processing a MESSAGE_RECEIVED for session 35
2017.12.14 14:12:53 org.jivesoftware.openfire.spi.RoutingTableImpl - Failed to route packet to JID: 192.168.10.21/371i4y2vkc packet: <iq type="error" id="log_user_1" to="192.168.10.21/371i4y2vkc"><query xmlns="jabber:iq:auth"><username>user2</username></query><error code="503" type="cancel"><service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/></error></iq>
2017.12.14 14:12:53 org.jivesoftware.openfire.IQRouter - IQ sent to unreachable address: <iq type="error" id="log_user_1" to="192.168.10.21/371i4y2vkc"><query xmlns="jabber:iq:auth"><username>user2</username></query><error code="503" type="cancel"><service-unavailable xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/></error></iq>