Importing vulnwhisperer kibana.json file for out of the box visualization in kibana dashboard

@flash1293
Another thing is although I inserted the logstash-vulnwhisperer-template_elk7.json template to the elasticsearch with the following command:
cat logstash-vulnwhisperer-template_elk7.json | curl -XPUT 'https://:9200/_template/logstash' -u username:password -k -H 'Content-Type: application/json' -d @-

But when I go to saved objects and suppose open the VulnWhisperer - Reporting, it gives the following error:
[timelion_vis] > Timelion request error: undefined Error: in cell #1: Elasticsearch index not found: logstash-vulnwhisperer-*

Could you please tell me what I might be missing?? Thank a ton again.