# Deploy triage

Platform: Vercel | Framework: Next.js | Package manager: npm | Node: not shown

First error line (6): `Error: supabaseUrl is required.`

## Most likely cause: Environment variable missing at build time

Line 6: `Error: supabaseUrl is required.`

A required environment variable is not set for this build (the log names 'supabaseUrl'). Values in your local .env file are not uploaded to the host.

Fix:

1. Add the variable in the host's project settings, under Environment Variables, for the environment that failed (Production or Preview).
2. Variables with NEXT_PUBLIC_ or VITE_ prefixes are baked in at build time, so redeploy after adding them.
3. If the code reads it at import time (top of a file), it also runs during build. Move the read inside the function that needs it.

## Also seen: A page failed while being prerendered

Line 8: `Error occurred prerendering page "/pricing".`

Next.js renders '/pricing' at build time and it threw. Usually a fetch to your own API (not running during build), a missing env var, or data that is undefined at build time.

Fix:

1. Read the error just above this line in the log; it names the real cause.
2. Do not fetch your own /api routes from server components. Call the function directly.
3. If the page needs request-time data, mark it dynamic: export const dynamic = 'force-dynamic'.