Deploy T3 stack on Fly.io

#0 2.229 ❌ Invalid environment variables: {
#0 2.229   DATABASE_URL: [ 'Required' ],
#0 2.229   NEXTAUTH_SECRET: [ 'Required' ],
#0 2.229   NEXTAUTH_URL: [ 'Required' ],
#0 2.229   DISCORD_CLIENT_ID: [ 'Required' ],
#0 2.229   DISCORD_CLIENT_SECRET: [ 'Required' ],
#0 2.229   AWS_ACCESS_KEY_ID: [ 'Required' ],
#0 2.229   AWS_SECRET_ACCESS_KEY: [ 'Required' ]
#0 2.229 }
#0 2.230 - error Failed to load next.config.mjs, see more info here https://nextjs.org/docs/messages/next-config-error
#0 2.236
#0 2.236 > Build error occurred
#0 2.237 Error: Invalid environment variables
#0 2.237     at f (file:///app/node_modules/@t3-oss/env-nextjs/dist/index.mjs:1:386)
#0 2.237     at l (file:///app/node_modules/@t3-oss/env-nextjs/dist/index.mjs:1:576)
#0 2.237     at C (file:///app/node_modules/@t3-oss/env-nextjs/dist/index.mjs:1:749)
#0 2.237     at file:///app/src/env.mjs:4:20
#0 2.237     at ModuleJob.run (node:internal/modules/esm/module_job:194:25)