Unable to complete your request. The following exception occurred: Parameter named 'containerSpecKey' should be not null!.

URL : https://developers.redhat.com/products/red-hat-decision-manager/hello-world/

I used the above mentioned URL to check the Red Hat Decision Manager working and followed all the steps as mentioned.

1. Installation completed.
   2.Import Project completed.
   3.While Build and Deploy got an error : "Unable to complete your request. The following exception occurred: Parameter named 'containerSpecKey' should be not null!.". Please see the screenshot attached.
   

4.While testing the decision service through Swagger getting empty container list, but i can see container is running in Decision Manager UI.
See the response:
{
"type": "SUCCESS",
"msg": "List of created containers",
"result": {
"kie-containers": {
"kie-container": []
}
}
}

Please check and do needful ASAP.

Thanks
SRC