96 troubleshooting guides

Fix Errors

Step-by-step fixes for the most common vibe coding errors. Find your error, follow the steps, ship again.

The latest batch added 36 schema-driven fixes across Supabase, Stripe, Clerk, and Resend.

Browse by Tool

Bolt fixes

22

Troubleshooting pages for bolt build, auth, deploy, and integration issues.

Clerk fixes

1

Troubleshooting pages for clerk build, auth, deploy, and integration issues.

Cloudflare fixes

1

Troubleshooting pages for cloudflare build, auth, deploy, and integration issues.

Cursor fixes

22

Troubleshooting pages for cursor build, auth, deploy, and integration issues.

Lovable fixes

32

Troubleshooting pages for lovable build, auth, deploy, and integration issues.

Railway fixes

2

Troubleshooting pages for railway build, auth, deploy, and integration issues.

Resend fixes

1

Troubleshooting pages for resend build, auth, deploy, and integration issues.

Stripe fixes

8

Troubleshooting pages for stripe build, auth, deploy, and integration issues.

Supabase fixes

1

Troubleshooting pages for supabase build, auth, deploy, and integration issues.

Vercel fixes

6

Troubleshooting pages for vercel build, auth, deploy, and integration issues.

Integration Fix Clusters

Supabase fixes

9 generated troubleshooting pages across Lovable, Cursor, and Bolt.

Stripe fixes

9 generated troubleshooting pages across Lovable, Cursor, and Bolt.

Clerk fixes

9 generated troubleshooting pages across Lovable, Cursor, and Bolt.

Resend fixes

9 generated troubleshooting pages across Lovable, Cursor, and Bolt.

Lovable Errors

lovablebeginner

My Lovable App Is Slow

Pages take 3-5 seconds to load

lovablebeginner

Lovable App Shows Blank Screen After Deploy

Works in Lovable preview

lovablebeginner

Lovable Keeps Changing Things I Didn't Ask It To

Asked to change button color, whole layout changed

lovablebeginner

Lovable Form Data Not Saving to Supabase

Form submits successfully but data doesn't appear in Supabase

lovablebeginner

Lovable Login Not Working After Deploy

Login works in preview, fails on live URL

lovablebeginner

Stripe Payments Not Working in Lovable App

Payment form shows but card is declined

lovablebeginner

Lovable App Looks Broken on Mobile

Desktop looks fine, mobile is broken

lovablebeginner

Lovable App Build Fails on Vercel

Vercel shows red X on deployment

lovablebeginner

Images Not Loading in Lovable App

Broken image icons showing

lovablebeginner

Lovable Credits Running Out Too Fast

Used all monthly credits in a few days

lovablebeginner

Dark Mode Not Working in Lovable App

Dark mode toggle doesn't change anything

lovablebeginner

Contact Form Not Sending Emails in Lovable

Form submits to database but no email notification

lovablebeginner

Lovable Pages Return 404 on Direct URL

Home page works

lovablebeginner

Lovable Supabase Schema Error

Error: column X does not exist

lovableintermediate

Lovable App Database Queries Are Slow

Pages with data take 3+ seconds to load

lovablebeginner

TypeScript Errors in Lovable App

Red underlines in Lovable editor

lovablebeginner

CSS Changes Not Showing in Lovable

Changed a class but nothing looks different

lovableintermediate

Lovable App Hitting API Rate Limits

External API returns 429 Too Many Requests

lovableintermediate

File Upload Not Working in Lovable

Upload button does nothing

lovableintermediate

Search Feature Not Working in Lovable App

Search returns no results

lovableintermediate

Lovable Supabase RLS Blocking Inserts

Form submits in Lovable but no row appears in Supabase

lovablebeginner

Lovable Supabase Auth Session Missing After Refresh

User signs in successfully, then gets logged out on refresh

lovablebeginner

Lovable Supabase Storage Upload Failing

File picker works but the upload fails

lovableintermediate

Lovable Stripe Checkout Session Returning 400

Stripe checkout creation fails with a 400 error

lovableintermediate

Lovable Stripe Webhook Not Updating Access

Payment succeeds but the user never gets access

lovableintermediate

Lovable Stripe Billing Portal Return URL Broken

Stripe Billing Portal opens but returns to a broken page

lovablebeginner

Lovable Clerk Middleware Redirect Loop

The app keeps bouncing between login and dashboard

lovablebeginner

Lovable Clerk Production Domain Not Authorized

Authentication works locally but not on the live domain

lovableintermediate

Lovable Clerk Session Missing After Refresh

The user appears signed out after a refresh

lovablebeginner

Lovable Resend API Key Missing in Production

Emails work locally but not after deploy

lovablebeginner

Lovable Resend Emails Not Sending From Contact Form

The contact form succeeds but nobody gets an email

lovableintermediate

Lovable Resend Emails Going To Spam On Launch

Emails are sent, but they land in spam

Bolt Errors

boltintermediate

npm Package Not Working in Bolt.new

npm install fails with compile errors

boltbeginner

Bolt.new App Not Deploying

Deploy button doesn't work

boltbeginner

Bolt.new Forgetting Previous Instructions

Bolt contradicts earlier decisions

boltbeginner

Bolt.new Preview Not Updating

Preview shows old version

boltbeginner

Bolt.new Daily Credits Exhausted

'Credits exhausted' message

boltbeginner

Bolt.new Data Not Persisting Between Sessions

Data disappears on page refresh

boltintermediate

TypeScript Strict Mode Errors in Bolt.new

Red errors throughout the editor

boltintermediate

CORS Error in Bolt.new App

'Access-Control-Allow-Origin' error in console

boltbeginner

Bolt.new Styling Looks Different Every Time

New components don't match existing design

boltbeginner

Bolt.new Stuck in Infinite Loading

Spinner never stops

boltintermediate

Bolt Supabase RLS Blocking Inserts

Form submits in Bolt but no row appears in Supabase

boltbeginner

Bolt Supabase Auth Session Missing After Refresh

User signs in successfully, then gets logged out on refresh

boltbeginner

Bolt Supabase Storage Upload Failing

File picker works but the upload fails

boltintermediate

Bolt Stripe Checkout Session Returning 400

Stripe checkout creation fails with a 400 error

boltintermediate

Bolt Stripe Webhook Not Updating Access

Payment succeeds but the user never gets access

boltintermediate

Bolt Stripe Billing Portal Return URL Broken

Stripe Billing Portal opens but returns to a broken page

boltbeginner

Bolt Clerk Middleware Redirect Loop

The app keeps bouncing between login and dashboard

boltbeginner

Bolt Clerk Production Domain Not Authorized

Authentication works locally but not on the live domain

boltintermediate

Bolt Clerk Session Missing After Refresh

The user appears signed out after a refresh

boltbeginner

Bolt Resend API Key Missing in Production

Emails work locally but not after deploy

boltbeginner

Bolt Resend Emails Not Sending From Contact Form

The contact form succeeds but nobody gets an email

boltintermediate

Bolt Resend Emails Going To Spam On Launch

Emails are sent, but they land in spam

Cursor Errors

cursorbeginner

Cursor Not Understanding My Codebase

Generic answers that don't match your code

cursorbeginner

Cursor Changing Files I Didn't Ask It To

Modified 10 files when you asked about 1

cursorbeginner

Cursor Says Context Limit Reached

'Context window is getting long' warning

cursorbeginner

Cursor Generating Pages Router Instead of App Router

Creates pages/ instead of app/ files

cursorintermediate

Cursor Agent Mode Stopping Mid-Task

Agent stops partway through

cursorbeginner

Cursor Autocomplete Is Slow

Tab completions appear after you've typed past them

cursorbeginner

Cursor Generating Wrong Import Paths

Import paths don't resolve

cursorintermediate

Cursor Breaking Working Code When Adding Features

Working feature broke after adding a new one

cursorintermediate

Cursor MCP Server Not Connecting

MCP tools not appearing in Cursor

cursorintermediate

Cursor Using APIs That Don't Exist

Generated code calls functions that don't exist

cursorintermediate

Cursor Supabase RLS Blocking Inserts

Form submits in Cursor but no row appears in Supabase

cursorbeginner

Cursor Supabase Auth Session Missing After Refresh

User signs in successfully, then gets logged out on refresh

cursorbeginner

Cursor Supabase Storage Upload Failing

File picker works but the upload fails

cursorintermediate

Cursor Stripe Checkout Session Returning 400

Stripe checkout creation fails with a 400 error

cursorintermediate

Cursor Stripe Webhook Not Updating Access

Payment succeeds but the user never gets access

cursorintermediate

Cursor Stripe Billing Portal Return URL Broken

Stripe Billing Portal opens but returns to a broken page

cursorbeginner

Cursor Clerk Middleware Redirect Loop

The app keeps bouncing between login and dashboard

cursorbeginner

Cursor Clerk Production Domain Not Authorized

Authentication works locally but not on the live domain

cursorintermediate

Cursor Clerk Session Missing After Refresh

The user appears signed out after a refresh

cursorbeginner

Cursor Resend API Key Missing in Production

Emails work locally but not after deploy

cursorbeginner

Cursor Resend Emails Not Sending From Contact Form

The contact form succeeds but nobody gets an email

cursorintermediate

Cursor Resend Emails Going To Spam On Launch

Emails are sent, but they land in spam

Deploy Errors

lovablebeginner

Lovable App Shows Blank Screen After Deploy

Works in Lovable preview

lovablebeginner

Lovable App Build Fails on Vercel

Vercel shows red X on deployment

lovablebeginner

Images Not Loading in Lovable App

Broken image icons showing

lovablebeginner

Contact Form Not Sending Emails in Lovable

Form submits to database but no email notification

lovablebeginner

Lovable Pages Return 404 on Direct URL

Home page works

lovablebeginner

TypeScript Errors in Lovable App

Red underlines in Lovable editor

boltintermediate

npm Package Not Working in Bolt.new

npm install fails with compile errors

boltbeginner

Bolt.new App Not Deploying

Deploy button doesn't work

boltbeginner

Bolt.new Preview Not Updating

Preview shows old version

boltintermediate

TypeScript Strict Mode Errors in Bolt.new

Red errors throughout the editor

boltintermediate

CORS Error in Bolt.new App

'Access-Control-Allow-Origin' error in console

boltbeginner

Bolt.new Stuck in Infinite Loading

Spinner never stops

cursorintermediate

Cursor MCP Server Not Connecting

MCP tools not appearing in Cursor

vercelbeginner

Vercel Deployment Failed

Red X on deployment

vercelbeginner

Environment Variables Not Working on Vercel

App works locally but breaks on Vercel

vercelbeginner

Custom Domain Not Connecting to Vercel

Domain still shows 'can't be reached'

railwaybeginner

Railway Deployment Failing

Deploy fails in Railway

railwaybeginner

Railway App Crashes After Deploy

Deploy succeeds but app crashes

cloudflareintermediate

Cloudflare Worker Returning 500 Error

500 Internal Server Error from Worker

vercelbeginner

SSL Certificate Not Working After Domain Setup

No padlock icon in browser

vercelbeginner

www Not Redirecting to Non-www

www.domain.com and domain.com show different things

vercelintermediate

Vercel Function Timing Out

504 Gateway Timeout

resendintermediate

Resend Emails Going to Spam

Emails arrive in spam folder

lovablebeginner

Lovable Resend API Key Missing in Production

Emails work locally but not after deploy

lovablebeginner

Lovable Resend Emails Not Sending From Contact Form

The contact form succeeds but nobody gets an email

lovableintermediate

Lovable Resend Emails Going To Spam On Launch

Emails are sent, but they land in spam

cursorbeginner

Cursor Resend API Key Missing in Production

Emails work locally but not after deploy

cursorbeginner

Cursor Resend Emails Not Sending From Contact Form

The contact form succeeds but nobody gets an email

cursorintermediate

Cursor Resend Emails Going To Spam On Launch

Emails are sent, but they land in spam

boltbeginner

Bolt Resend API Key Missing in Production

Emails work locally but not after deploy

boltbeginner

Bolt Resend Emails Not Sending From Contact Form

The contact form succeeds but nobody gets an email

boltintermediate

Bolt Resend Emails Going To Spam On Launch

Emails are sent, but they land in spam

Payments Errors

lovablebeginner

Stripe Payments Not Working in Lovable App

Payment form shows but card is declined

stripeintermediate

How to Test Stripe Webhooks Locally

Webhooks work on Stripe but not locally

stripeintermediate

Stripe Webhook Signature Verification Failed

Error: webhook signature verification failed

stripebeginner

Stripe Checkout Not Redirecting After Payment

Payment succeeds but user stays on Stripe page

stripeintermediate

Stripe Subscription Not Updating in Database

User pays but subscription status not updating

stripebeginner

Accidentally Charged Real Money in Stripe

Real charges appearing in Stripe

stripeintermediate

Stripe Customer Portal Not Working

Portal link returns error

stripeintermediate

Stripe Payment Intent Failing

Payment form shows error

stripebeginner

Stripe Prices Not Showing in App

Pricing page shows nothing

lovableintermediate

Lovable Stripe Checkout Session Returning 400

Stripe checkout creation fails with a 400 error

lovableintermediate

Lovable Stripe Webhook Not Updating Access

Payment succeeds but the user never gets access

lovableintermediate

Lovable Stripe Billing Portal Return URL Broken

Stripe Billing Portal opens but returns to a broken page

cursorintermediate

Cursor Stripe Checkout Session Returning 400

Stripe checkout creation fails with a 400 error

cursorintermediate

Cursor Stripe Webhook Not Updating Access

Payment succeeds but the user never gets access

cursorintermediate

Cursor Stripe Billing Portal Return URL Broken

Stripe Billing Portal opens but returns to a broken page

boltintermediate

Bolt Stripe Checkout Session Returning 400

Stripe checkout creation fails with a 400 error

boltintermediate

Bolt Stripe Webhook Not Updating Access

Payment succeeds but the user never gets access

boltintermediate

Bolt Stripe Billing Portal Return URL Broken

Stripe Billing Portal opens but returns to a broken page