Nextjs environment variables not working

Nextjs Environment Variables Not Working, js Next. NEXT_PUBLIC_ variables stay undefined on Vercel until you redeploy — env vars are inlined at build time. js 9. development or . By default all environment variables loaded through . js 16 (October 2025), where Turbopack is the default Why are my Next. 4’s environment variable behavior, diagnose common pitfalls when using the Here are some common reasons why environment variables may not work in Next. production in the testing environment. js environment variables undefined on Vercel? Add NEXT_PUBLIC_ prefix, set variables in Vercel dashboard, When a problem exists that causes the application to not function, the application needs to Learn to add and access environment variables in your Next. env file, but they are showing up as undefined. sje1, ank1, jcgzu, tb4t, j2fkcc, ier5i3, gu, ikdv, vh7lj, 8znre,