Problem index · 67 problems · 10 questions
Something broke? Find your symptom.
67 problems founders hit with apps built with Lovable, Bolt, Replit, v0, Base44, Cursor or Claude Code, each with a quick verdict: how serious it is, whether you can fix it yourself and what a fix typically costs. 10 of them are settings fixes you can do alone. 8 put data, money or other people's records at risk and need attention today.
AI loops and credits (8) · Deploy and go live (14) · Sign-in and accounts (8) · Payments (6) · Data and database (8) · Code and ownership (7) · Screens and forms (6) · AI APIs and integrations (6) · Launch and safety (4)
AI loops and credits
VC-01 · Lovable
Lovable keeps saying it fixed the bug: how to get out of the loop without burning credits
Lovable says the issue is fixed, you refresh, and nothing changed.MediumPartly DIYVC-02 · ReplitReplit agent stuck in a loop or deleted my data: what to do now
The Agent repeats the same change and the error never goes away.HighPartly DIYVC-03 · BoltBolt keeps breaking what it just fixed
Each fix in Bolt works for one prompt, then the next change breaks the same screen again.MediumPartly DIYVC-04 · ReplitReplit Agent burned my credits and the app still doesn't work
Replit Agent has used most of your monthly credits, and the app still fails on the same feature.MediumPartly DIYVC-05 · Cursor, Claude CodeCursor or Claude Code rewrote files and the app stopped working
After one long Cursor or Claude Code session, the app will not start and dozens of files changed.HighPartly DIYVC-06 · Supabase, Replit, LovableThe agent ran a migration and my data is gone
After the AI ran a database change, a table or its rows are empty and user records are missing.CriticalPartly DIYVC-07 · Any toolMy app worked yesterday and I changed nothing
The app loaded fine yesterday, you changed nothing, and now it shows errors, a blank page or will not load.HighPartly DIYVC-08 · Cursor, Claude Code, LovableThe AI forgets how my app works and breaks other features
Every new feature the AI adds breaks an older one, and it rewrites code it already wrote.MediumPartly DIYDeploy and go live
VC-09 · Lovable
Lovable app not working: what breaks between preview and production
The preview works, the live site shows a blank page or an old version.HighDIYVC-10 · Base44Base44 app not loading or stuck on Thinking: what it usually means
The chat says Thinking for many minutes and nothing happens.MediumDIYVC-11 · v0v0 app needs a backend and deployment: what to add before real users
The screens look finished but every button only changes the page.HighHireVC-12 · Claude CodeClaude Code or Cursor app works on localhost, breaks in production
Every page works locally. The live site returns a 500 error.HighPartly DIYVC-13 · LovableLovable publish fails with a build error
The Lovable Publish dialog says Build errors need fixing, and the live site stays on the old version.MediumDIYVC-14 · LovableLovable custom domain stuck on Verifying or Setting up
Your domain in Lovable has shown Verifying or Setting up for hours, and the site is not reachable there.LowDIYVC-15 · Bolt, NetlifyBolt app won't deploy to Netlify
You clicked Publish in Bolt with Netlify as the host, and the deploy fails or never shows a working site.MediumPartly DIYVC-16 · v0, Vercel, Next.jsv0 app build failed on Vercel
You clicked Publish in v0 and the Vercel deployment card shows a build error instead of a live URL.MediumPartly DIYVC-17 · Vercel, Netlify, Lovable, BoltBlank white screen after deploy
The deploy says success, but the live URL shows an empty white page with nothing on it.HighPartly DIYVC-18 · Netlify, Vercel, BoltPage shows 404 when I refresh or share a link
Clicking around works, but refreshing a page or opening a shared link shows Page not found or 404.MediumPartly DIYVC-19 · Vercel, Netlify, Next.jsEnvironment variables work locally but are undefined in production
Features that use API keys work on your laptop, but on the live site the key reads as undefined.MediumPartly DIYVC-20 · ReplitReplit deployment keeps crashing or going to sleep
Your published Replit app returns 502 errors, restarts on its own, or takes seconds to wake after a quiet spell.HighPartly DIYVC-21 · Base44Base44 app not updating after publish
You clicked Publish in Base44, saw the success message, but visitors still get the old version of the app.LowDIYVC-22 · Cursor, Claude Code, VercelApp works on my laptop but not on the server
Everything runs on localhost, but the deployed version shows errors, empty data, or a failed build.HighPartly DIYSign-in and accounts
VC-23 · Supabase, Lovable, Bolt
Users can't log in on the live site
Sign-in works in the builder preview, but on the published URL users see an error, a spinner, or land back on the login page.HighPartly DIYVC-24 · Supabase, Firebase, Next.jsGoogle sign-in fails with redirect_uri_mismatch
Clicking Sign in with Google opens a Google error page that says Error 400 redirect_uri_mismatch.MediumDIYVC-25 · Supabase, LovableConfirmation and password-reset emails never arrive
New users never get the confirmation email, and Forgot password sends nothing, so nobody can get in.HighPartly DIYVC-26 · Supabase, Next.js, v0Users get logged out when they refresh the page
Users sign in fine, but pressing refresh or opening a new tab sends them straight back to the login page.MediumHireVC-27 · Lovable, v0, BoltAdmin pages open to anyone with the link
Anyone who types /admin into the address bar sees your dashboard, user list, or settings without logging in.CriticalHireVC-28 · Supabase, Firebase, LovableUsers can see each other's data
A customer reports seeing another customer's records, or you spot it yourself while testing with two accounts.CriticalHireVC-29 · Supabase, Lovable, BoltSupabase says "new row violates row-level security policy"
Saving a form fails with new row violates row-level security policy, or code 42501, while reading data still works.MediumPartly DIYVC-30 · Supabase, Lovable, ClerkSign-in works in preview but fails on my custom domain
Login works on the builder's preview address, but on yourdomain.com users get an error or bounce back to the sign-in page.HighPartly DIYPayments
VC-31 · Bolt
Bolt app broke after I added payments: Stripe, webhooks and what to check
Customers pay in Stripe but the app never unlocks the plan.CriticalHireVC-32 · Stripe, SupabaseCustomer paid but their account was not upgraded
Stripe shows a successful payment, but the customer's account still says Free and they email you asking for access.HighHireVC-33 · StripeStripe is still in test mode on the live site
Real customers' cards are declined or payments show only in Stripe's sandbox, and no real money arrives.HighPartly DIYVC-34 · Stripe, Next.js, BoltStripe checkout opens and then errors
Clicking Buy opens Stripe, or tries to, and then shows Something went wrong, No such price, or a blank page.HighPartly DIYVC-35 · Stripe, SupabaseCancelled subscriptions still have access
A customer cancelled weeks ago and Stripe shows the subscription as canceled, but they can still use every paid feature.HighHireVC-36 · Stripe, Lovable, v0Stripe secret key is in my frontend code
A key starting with sk_live_ or sk_test_ appears in your app's browser code, your GitHub repo, or a NEXT_PUBLIC_ variable.CriticalHireData and database
VC-37 · Supabase, Lovable, Bolt
My Supabase service_role key is in the browser
A scan, a developer or your own search of the live site's JavaScript found a key starting with sb_secret_ or a service_role token.CriticalHireVC-38 · Supabase, LovableData saves with no error but never shows up
The form says saved, nothing fails, but the list stays empty or the record is missing from the dashboard.MediumPartly DIYVC-39 · SupabaseSupabase project paused or free tier limit reached
The app shows endless spinners or failed requests, and the Supabase dashboard says the project is paused.HighDIYVC-40 · Supabase, Replit, LovableI have no backups and don't know how to restore
You have real customer data, nobody has ever restored anything, and you are not sure a backup exists.HighPartly DIYVC-41 · Supabase, ReplitTest data and real customer data are in one database
Your own test accounts, fake orders and sample rows sit next to paying customers, and every preview edit touches the live data.HighPartly DIYVC-42 · FirebaseFirebase rules are set to allow read, write: true
Your Firestore, Realtime Database or Storage rules contain if true, or Firebase emailed you that your rules are insecure.CriticalPartly DIYVC-43 · Supabase, Next.jsApp got slow once real users arrived
Pages that opened instantly with test data now take seconds, and Supabase shows slow queries or CPU warnings.MediumPartly DIYVC-44 · Supabase, LovableFile uploads fail or storage returns 403
Uploading an avatar or document fails, or files upload but images show broken with a 403 or 400 from storage.MediumPartly DIYCode and ownership
VC-45 · Lovable
Lovable Cloud to Supabase: how to move your data and keep the app working
Your database does not appear in your Supabase account.HighHireVC-46 · Lovable, Bolt, Replit, Base44I don't own my code and there is no GitHub repo
Your whole app exists only inside the builder's workspace, and no developer or second account can see the code.HighDIYVC-47 · BoltHow to export my Bolt app and run it elsewhere
You want the Bolt project on your own computer, in GitHub, or on a different host, and are not sure what comes with it.MediumDIYVC-48 · Base44Can I export my Base44 app?
You built on Base44 and want to know what you can take with you if you leave or hire a developer.MediumPartly DIYVC-49 · ReplitHow to move my Replit app off Replit
You want the app, its database and its domain running on a host you control, without losing data on the way.MediumPartly DIYVC-50 · Cursor, Claude Code, Lovable, BoltThe codebase is too messy for anyone to continue
Every developer you show the code to quotes a rebuild, and every new prompt breaks something that used to work.MediumHireVC-51 · Any toolHanding an AI-built app to a developer: what they need from you
You found a developer, and the first week disappears into finding logins, keys and the reason behind each feature.LowDIYScreens and forms
VC-52 · Vercel, Netlify, Supabase
CORS error only on the live site
The app works in preview, but on the live domain requests fail and the browser console shows a CORS error.MediumPartly DIYVC-53 · Next.js, v0, VercelHydration error after deploy
The live site flickers, then the console says Hydration failed or Text content does not match server-rendered HTML.LowPartly DIYVC-54 · Lovable, Bolt, SupabaseForm submits but nothing happens
You press Save, the button spins or resets, no error appears, and the data never shows up in the database.HighPartly DIYVC-55 · Any toolLooks fine on desktop, broken on phones
On a phone the page scrolls sideways, text is tiny, buttons overlap, or the menu cannot be opened.MediumPartly DIYVC-56 · Next.js, Vercel, SupabaseImages and files not loading after deploy
Pictures and uploaded files show as broken icons or alt text on the live site but worked in preview.MediumPartly DIYVC-57 · Supabase, Lovable, ReplitApp is stuck on a loading spinner
The live app shows a spinner forever, sometimes only for signed-in users or only after it sat idle for a while.HighPartly DIYAI APIs and integrations
VC-58 · OpenAI, Lovable, Bolt
My OpenAI key was in the frontend and I got a surprise bill
OpenAI usage jumped overnight, and the API key sits in the browser code or in a NEXT_PUBLIC_ or similar public variable.CriticalHireVC-59 · OpenAIOpenAI 429 rate limit errors in my app
AI features fail with 429 Too Many Requests or a slow_down error once more than a few people use the app at once.MediumPartly DIYVC-60 · OpenAIAI API costs are spiking
Your OpenAI bill grows far faster than your user count, or usage keeps climbing while nobody is using the app.HighPartly DIYVC-61 · Vercel, Supabase, NetlifyServerless or edge function timed out
Long actions like AI generation, PDF export or imports fail with a 504 or FUNCTION_INVOCATION_TIMEOUT after a fixed number of seconds.MediumPartly DIYVC-62 · Supabase, LovableTransactional emails not sending from my app
Confirmations, password resets, receipts or notifications never arrive, or they only arrive at your own email address.HighPartly DIYVC-63 · Vercel, NetlifyIntegration works locally but fails in production
Payments, Google sign-in, email or an AI API work on localhost or in preview but error on the live domain.MediumPartly DIYLaunch and safety
VC-64 · Supabase, Firebase
Bots and spam sign-ups are flooding the app
Hundreds of accounts with random emails appear, your email quota is used up, and AI credits or storage get burned.HighPartly DIYVC-65 · Any toolI only learn about outages from customers
The app breaks for hours before a customer emails you, and you cannot tell when it started or why.MediumPartly DIYVC-66 · Any toolDo I need a privacy policy for my vibe coded app?
You are about to launch, collect emails or payments, and do not know whether a privacy policy is required.MediumPartly DIYVC-67 · Any toolCan I launch this app safely?
The app works and looks finished, but you have no way to tell whether real users and money are safe on it.HighPartly DIYQuestions founders ask
Lovable
Is my Lovable app safe?
Only if the database access rules are right, and Lovable cannot tell you that on its own.LovableCan Lovable apps be hacked?
Yes, and in most real cases nobody had to hack anything: someone opened a database table that was never locked, or found a secret key in the page code.Any toolWho can fix my vibe coded app?
Any experienced full-stack developer who knows your stack, usually React with Supabase, can fix a vibe coded app.Any toolHow much does it cost to fix a vibe coded app?
A check or audit costs $49–$800, a single fix €99–$990, and a cleanup that makes the app safe to launch $1,500–$15,000.Any toolShould I hire a freelancer or an agency to fix my vibe coded app?
A freelancer for one clear bug or a short review, an agency or product team when the app takes money, holds personal data, or needs to be finished and then kept running.LovableHiring a Lovable developer: what to check before you pay
Before you pay, confirm three things: they will read your code and database before quoting, they work from invites to your accounts rather than your passwords, and you keep the code and the written findings.ReplitIs Replit safe for production?
Replit can host a production app: since the July 2025 database deletion it separates development and production databases by default and keeps the Agent out of production data.Any toolWhy does my app work in preview but break on the live site?
The preview and the live site are different builds with different settings.LovableHow do I export my app from Lovable and keep building elsewhere?
Turn on GitHub sync in Project settings and the code is in a repository you own, on every plan.Any toolShould I keep prompting or get a human to fix it?
Keep prompting while each attempt moves you forward and the error lives in one screen.When something has already gone wrong
Urgent