An error occurred while retrieving the list of VSE servers

Document ID : KB000074980
Last Modified Date : 26/02/2019
Show Technical Document Details
Getting an error when activemq-all-5.15.2.jar is placed in hotDeploy or in lib/shared folder for creating an Active MQ VS.

Error while retrieving list of Projects. (500 No JSON Formated Retrofit Error <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/> <title>Error 503 </title> </head> <body> <h2>HTTP ERROR: 503</h2> <p>Problem accessing /res-hub/v1/projects. Reason: <pre> Service Unavailable</pre></p> <hr /><a href="">Powered by Jetty:// 9.3.z-SNAPSHOT</a><hr/> </body> </html> )
DevTest 10.2
activemq -all-5.15.2.jar is not the correct jar to use for creating Active MQ virtual service which caused the issue.

This issue was also faced when the content of the hotdeploy folder or custom extensions were duplicated in the $DEVTEST_HOME/lib folder.
Adding the below jars in DevTest_Home/hotDeploy folder on VSE server and restarting VSE will resolve the issue.
. activemq-client-5.15.2.jar
. hawtbuf-1.11.jar

The documentation on the above is available at

If using custom extensions, place them under $DEVTEST_HOME/hotdeploy folder and it should be enough.
Additional Information:
activemq jars are available in, which can be downloaded from