Command not found error while import grafana existing json file using HTTP API

I am trying to import grafana existing json file using HTTP API , it is reading the json file successfully, but for each and every line , it is throwing ‘command not found’ error.

I tried to execute the below command,

curl -X POST --insecure -H “Authorization: Bearer eyJrIjoiOWwwUmpQYUFmczhRVG1CZ1VmdTZ1VlZLTlc2ba0xUb0QiLCJuIjoia2xhIiwiaWQiOjJ9” -H “Content-Type: application/json” -d ‘{“dashboard”:{“id”: 1,“title”: “tested33”,“tags”: [“templated”],“timezone”: “browser”,“rows”: [{}],“schemaVersion”: 6,“version”: 0},“overwrite”:false}’ -d “$(/u04/my_metrics.json)” localhost:3000/api/dashboards/db

it is reading each and every command but throwing ‘command not found’ error.Kindly help on this to resolve this issue