Fixes for v0 apps
Supabase query returns an empty array (no error)
LovableBoltv0Database / Supabase RLS
data: [] — select works in the SQL editor but returns nothing in the appLovableBoltv0Database / Supabase RLS
Supabase service_role key exposed in frontend code
LovableBoltv0CursorEnv vars & leaked keys
service_role key found in the JS bundle / NEXT_PUBLIC_SUPABASE_SERVICE_ROLE_KEYLovableBoltv0CursorEnv vars & leaked keys
OpenAI / Stripe secret key leaked in the browser
LovableBoltv0ReplitCursorEnv vars & leaked keys
sk-... or sk_live_... visible in DevTools network tab or page sourceLovableBoltv0ReplitCursorEnv vars & leaked keys
Environment variable is undefined in production
Cursorv0BoltEnv vars & leaked keys
process.env.X is undefined / import.meta.env.VITE_X is undefined after deployCursorv0BoltEnv vars & leaked keys
Magic link / OAuth login redirects to localhost:3000
LovableBoltv0CursorAuth
After clicking the email link or Google login, the browser opens http://localhost:3000LovableBoltv0CursorAuth
User is logged out after page refresh
LovableBoltv0Auth
After reload, user is null and protected pages redirect to /loginLovableBoltv0Auth
Stripe webhook: No signatures found matching the expected signature
CursorBoltReplitv0Payments
StripeSignatureVerificationError: No signatures found matching the expected signature for payloadCursorBoltReplitv0Payments
No such price / No such customer (test vs live mode mix-up)
CursorBoltv0LovablePayments
StripeInvalidRequestError: No such price: 'price_...'CursorBoltv0LovablePayments
Vercel build fails: Type error / ESLint errors (works locally)
Cursorv0BoltDeploys
Failed to compile. Type error: ... / Error: Command "npm run build" exited with 1Cursorv0BoltDeploys
CORS error: blocked by CORS policy: No 'Access-Control-Allow-Origin' header
CursorReplitBoltv0Deploys
Access to fetch at 'https://api...' from origin 'https://...' has been blocked by CORS policyCursorReplitBoltv0Deploys
Postgres: too many connections / remaining connection slots are reserved
Cursorv0ReplitPerformance
FATAL: sorry, too many clients already / remaining connection slots are reservedCursorv0ReplitPerformance
App is slow: dozens of database calls per page (N+1 queries)
LovableBoltCursorv0Performance
Page takes 3–10s; network tab shows many identical requestsLovableBoltCursorv0Performance
Too many re-renders / useEffect infinite loop
LovableBoltv0CursorPerformance
Error: Too many re-renders. React limits the number of renders / Maximum update depth exceededLovableBoltv0CursorPerformance
Supabase Storage upload fails: new row violates row-level security policy (403)
LovableBoltv0Database / Supabase RLS
StorageApiError: new row violates row-level security policy (403 Unauthorized)LovableBoltv0Database / Supabase RLS
Hydration failed because the server rendered HTML didn't match the client
v0CursorDeploys
Error: Hydration failed because the server rendered HTML didn't match the clientv0CursorDeploys
Postgres error: relation "public.xyz" does not exist
LovableBoltCursorv0Database / Supabase RLS
ERROR: 42P01: relation "public.profiles" does not exist / PostgREST could not find the tableLovableBoltCursorv0Database / Supabase RLS
Supabase "permission denied for table" (42501) on a new table
LovableBoltCursorv0ReplitDatabase / Supabase RLS
{"code":"42501","message":"permission denied for table your_table","hint":"Grant the required privileges to thLovableBoltCursorv0ReplitDatabase / Supabase RLS