Hi @Khurram_Shahzad, hope this reply finds you well, as I understood you made production config for your Strapi with Heroku, you need check if the production env is running in your local, however you need check the NODE_ENV= in your .env if it’s pointed to NODE_ENV=production, if yes you can make it NODE_ENV=development, second thing you need check cors config in your strapi but easly you can check https://docs.strapi.io/dev-docs/configurations/middlewares#cors;
Thanks.