Solution:     

1. Go to C:/ActiveMQ/conf/activemq.xml
   
2. Open activemq.xml & check any extra ‘/’ is added in below section
   
   
    <destinationPolicy>

     <policyMap>
   

     <policyEntries>
   

        <policyEntry topic="> /" >
   

               <!-- The constantPendingMessageLimitStrategy is used to prevent
   

               slow topic consumers to block producers and affect other consumers
   

                by limiting the number of messages that are retained
   

                For more information, see:

               http://activemq.apache.org/slow-consumer-handling.html

               -->
   

               <pendingMessageLimitStrategy>
   

               <constantPendingMessageLimitStrategy limit="1000"/>
   

               </pendingMessageLimitStrategy>
   

               </policyEntry>
   

         </policyEntries>
   

       </policyMap>
   

   </destinationPolicy>
   

3. Remove the ‘/’ and save it. 
   

4. Restart Tomcat, Active MQ & Postgres services.
   

5.  Login to Automation Edge UI.