ShipVibed fix guidesFixes for the errors AI-built apps hit on deploy day, from ShipVibed.https://shipvibed.com/en-usWhat Lovable's security scan covers, and what it doesn'thttps://shipvibed.com/guides/lovable-security-scan-vs-production-review/https://shipvibed.com/guides/lovable-security-scan-vs-production-review/Lovable's Quick scan, Deep scan and auto-fix compared with a free outside checker, a manual production review and a pentest, area by area: RLS, secrets, SPA routing, env vars, webhooks, CORS, headers, monitoring and free-tier limits.Fri, 13 Nov 2026 12:00:00 GMTblocked by CORS policy: No 'Access-Control-Allow-Origin' headerhttps://shipvibed.com/guides/blocked-by-cors-policy-split-origin/https://shipvibed.com/guides/blocked-by-cors-policy-split-origin/Fix "blocked by CORS policy" when your front-end and API live on different domains: answer the OPTIONS preflight, allow your real production origin, and never mix * with cookies.Fri, 13 Nov 2026 12:00:00 GMTsupabaseUrl is requiredhttps://shipvibed.com/guides/env-vars-undefined-in-production/https://shipvibed.com/guides/env-vars-undefined-in-production/Fix "supabaseUrl is required" in production: use the VITE_ or NEXT_PUBLIC_ prefix, set the vars on the host, and rebuild. Don't put secret keys in them.Thu, 12 Nov 2026 12:00:00 GMTredirects to localhost:3000 after deployhttps://shipvibed.com/guides/supabase-auth-redirects-to-localhost/https://shipvibed.com/guides/supabase-auth-redirects-to-localhost/Sign-up or OAuth redirects to localhost:3000 after deploy. Set the Supabase Site URL and Redirect URLs to your production domain, and pass redirectTo.Thu, 12 Nov 2026 12:00:00 GMT404 on refresh (404: NOT_FOUND)https://shipvibed.com/guides/spa-404-on-refresh-vercel-netlify/https://shipvibed.com/guides/spa-404-on-refresh-vercel-netlify/A 404 on refresh of a deep route returns 404: NOT_FOUND on Vercel or "Page not found" on Netlify. Add one SPA rewrite to index.html.Thu, 12 Nov 2026 12:00:00 GMTNo signatures found matching the expected signaturehttps://shipvibed.com/guides/stripe-webhook-signature-verification-failed/https://shipvibed.com/guides/stripe-webhook-signature-verification-failed/Fix "No signatures found matching the expected signature for payload": use the right whsec_ secret, verify the raw body, and check failed deliveries.Thu, 12 Nov 2026 12:00:00 GMTnew row violates row-level security policyhttps://shipvibed.com/guides/supabase-new-row-violates-row-level-security/https://shipvibed.com/guides/supabase-new-row-violates-row-level-security/Fix "new row violates row-level security policy" (Postgres 42501) in Supabase: add an insert policy, send user_id, and confirm a session.Thu, 12 Nov 2026 12:00:00 GMTReplit publishing fails: listen on 0.0.0.0https://shipvibed.com/guides/replit-publish-fails-port-0-0-0-0/https://shipvibed.com/guides/replit-publish-fails-port-0-0-0-0/Replit Preview works but publishing fails, or the live URL is broken. Listen on 0.0.0.0, add Secrets in the Publishing pane, and keep the homepage fast.Thu, 12 Nov 2026 12:00:00 GMT