I am trying to execute my Nifi processor using the the below mentioned command: curl -i -X PUT -d '{"id":"d68bb8c4-085c-369e-02bb-e1a610095a30","state":"RUNNING"}' localhost:8080/nifi-api/flow/process-groups/d68bb8c4-085c-369e-02bb-e1a610095a30 but I am getting this error: HTTP/1.1 415 Unsupported Media Type Date: Wed, 30 Oct 2019 07:21:46 GMT X-Frame-Options: SAMEORIGIN Content-Security-Policy: frame-ancestors 'self' X-XSS-Protection: 1; mode=block Content-Type: text/plain Vary: Accept-Encoding Content-Length: 31 Server: Jetty(9.4.11.v20180605) HTTP 415 Unsupported Media Type   Can someone please help me understand this? ... View more