Failed to find .env file. Error command env-cmd .env.development gatsby develop
Failed to find .env file at default paths: [./.env,./.env.js,./.env.json].
While running the to start the server using the command.
cmd: npm run develop
Finally i found solution
Add -f to the script in package.json file
"env-cmd -f .env.development gatsby develop",
then, i run the command, my graphql IDE plaground is working fine.