ERR-148/stack trace

ERR-148

Base44 Stripe integration broken — fix payments after export

Base44 Stripe integration broken — fix payments after export

Last updated 17 April 2026 · 8 min read · By Hyder Shah

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Direct answer

Scope of this page:Base44-specific Stripe issues — migrating off Base44’s @base44/payments abstraction into a direct Stripe wiring after export. For the tool-agnostic error-signature fix see Stripe webhook not firing. Shopping for a paid engagement? Add payments to AI app.

Base44 apps may use Base44’s payment abstractions internally. When exported, the Stripe integration needs to be wired directly: checkout session creation in an API route, webhook handling with signature verification, and subscription state management. This guide covers building a complete Stripe integration for a Base44 export.

Quick fix for Base44 Stripe integration broken — fix

Start here

Fix 1 — Identify what payment code was generated

Search the exported codebase for Stripe references:

grep -r 'stripe\|payment\|checkout\|@base44' src/

Determine if the code calls Stripe directly or through Base44’s payment layer. If through Base44’s API, the payment code needs to be replaced.

Deeper fixes when the quick fix fails

02
Fix 2 — Implement direct Stripe integration
Install stripe:
```
npm install stripe
```
Create app/api/stripe/checkout/route.ts with a POST handler that creates a Stripe checkout session. Create app/api/stripe/webhook/route.ts with raw body parsing and signature verification. Subscribe in Stripe Dashboard to: checkout.session.completed, invoice.paid, customer.subscription.updated, customer.subscription.deleted.
03
Fix 3 — Add Stripe keys to production environment
Add to your deployment environment:
```
STRIPE_SECRET_KEY=sk_live_...
STRIPE_WEBHOOK_SECRET=whsec_...
NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=pk_live_...
```
STRIPE_SECRET_KEYfrom Stripe Dashboard → Developers → API Keys, STRIPE_WEBHOOK_SECRETfrom your webhook endpoint configuration. Don’t mix test and live keys — they fail silently.
04
Fix 4 — Test the complete payment flow
Use Stripe test mode: test card 4242 4242 4242 4242, any future expiry, any CVC. Verify: (1) checkout opens, (2) payment succeeds, (3) webhook fires within 30 seconds (visible in Stripe Dashboard → Webhooks → your endpoint), (4) your database reflects the paid status, (5) the user can access paid routes.

Before going live

Switch Stripe Dashboard to live mode, create a live webhook endpoint with a new signing secret, and update STRIPE_WEBHOOK_SECRETand the secret/publishable keys to live values. Do one real $1 purchase on your own card as a final end-to-end test — refund it immediately. Anything that worked in test mode but fails live is almost always a key mismatch.

Why AI-built apps hit Base44 Stripe integration broken — fix

Base44 abstracts payment infrastructure for apps built on its platform. Exported code may reference Base44’s payment APIs rather than Stripe directly. Moving to a standalone deployment requires implementing Stripe directly.

The exported codebase often contains references to @base44/paymentsor internal billing helpers that only work inside Base44’s runtime. Outside, those calls silently succeed or fail with cryptic errors — but never actually charge a card or activate a subscription.

“Payments worked perfectly inside Base44 but nothing works after I exported.”

Base44 Community

Diagnose Base44 Stripe integration broken — fix by failure mode

Confirm which layer is missing before rewriting anything.

Symptom	Cause	Fix
Checkout button does nothing / errors 404	No /api/stripe/checkout route in exported code	Fix 1 + Fix 2
Checkout loads but fails: 'Invalid API key'	Stripe keys not in production env	Fix 3
Payment succeeds but user still sees paywall	No webhook handler or webhook not reaching app	Fix 2 + Fix 3
Test card works, live card fails silently	Still using test keys in live mode	Fix 3

Related errors we fix

Still stuck with Base44 Stripe integration broken — fix?

Emergency triage · $299 · 48h turnaround

We restore service and write the root-cause report.

Payments stop working the day you export. We rebuild the Stripe integration end-to-end with a verified purchase:

→Checkout button does nothing after export
→Payments succeed in Stripe but users don't get access
→You have existing Base44 paying customers to preserve
→You want Stripe, auth, and deploy all wired in one pass

start the triage →

Free Rescue Diagnostic

30-min call, we scope the integration

Emergency Triage

$299 · 48h

Minimum checkout + webhook working

Integration Fix

From $799

Full Stripe: checkout, webhooks, lifecycle, live mode

App Migration

From $1,499

Base44 export rebuilt on your stack with Stripe

Base44 Stripe integration broken — fix questions

Why doesn't my Base44 Stripe integration work after export?+

Base44 abstracts payments behind its own API. The exported code calls @base44/payments (or similar) rather than Stripe directly. Outside Base44's runtime, those calls don't do anything useful. You have to install the stripe npm package and write the checkout session + webhook routes yourself.

Do I need to use Stripe Checkout or Payment Elements?+

For a Base44 export, Stripe Checkout is the fastest path to working payments. It's a Stripe-hosted page — you create a session server-side and redirect the user. Payment Elements gives more design control but requires more front-end code. Start with Checkout and upgrade later if needed.

Where do I find my Stripe webhook signing secret?+

Stripe Dashboard → Developers → Webhooks → click your endpoint → 'Signing secret' reveal. Starts with whsec_. This is different from your API keys (sk_live_/sk_test_). Each webhook endpoint has its own signing secret — test-mode and live-mode endpoints have different secrets.

How do I handle subscription renewals and cancellations?+

Subscribe to invoice.paid (renewals), customer.subscription.updated (plan changes, trial ending), and customer.subscription.deleted (cancellations). Each handler should update your database's subscription state. If you only listen to checkout.session.completed, renewals don't extend access and cancellations don't remove it.

Can I migrate existing Base44 paying customers to my new Stripe integration?+

Usually yes. Base44 uses Stripe under the hood, so the Stripe customer IDs and subscription IDs already exist in your Stripe account. Re-map them to your new auth provider's user IDs and the existing subscriptions keep renewing against the customers' existing cards. Don't create new Stripe subscriptions — you'd double-charge users.

How much does a full Stripe integration rebuild cost?+

A direct Stripe integration for an exported Base44 app — checkout, webhooks, subscription lifecycle, plus test and live mode verified — costs $799 as Integration Fix. For the full productionization (Stripe + auth + deploy + monitoring), our Deployment & Launch package starts at $1,999.

Next step

Ship the fix. Keep the fix.

Emergency Triage restores service in 48 hours. Break the Fix Loop rebuilds CI so this error cannot ship again.

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About the author

Hyder Shah leads Afterbuild Labs, shipping production rescues for apps built in Lovable, Bolt.new, Cursor, Replit, v0, and Base44. our rescue methodology.

Base44 Stripe integration broken — fix experts

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