AI Build Errors
Browse 69 error fixes across all AI build tools — Cursor, Lovable, Supabase, and more.
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AI Build Errors is a library of 69 error fixes across 12 popular AI development tools — Claude API, Cursor, Lovable, V0, Supabase, Firebase, OpenAI, Replit, Zapier, Make, Bubble, and Framer. Each guide explains what the error means, lists common causes, and walks through the fix with code examples and prevention tips.
Most common errors
The errors developers hit most often when building with AI tools
How to Fix 'App not available in your plan' in Zapier
App not available in your plan
How to Fix 'App not responding to webhook' in Make (Integromat)
App not responding to webhook
How to Fix 'Cannot read properties of undefined (reading diff)' in Cursor
Cannot read properties of undefined (reading 'diff')
How to Fix 'App not available in your plan' in Zapier
App not available in your plan
How to Fix 'App not responding to webhook' in Make (Integromat)
App not responding to webhook
How to Fix 'Cannot read properties of undefined (reading diff)' in Cursor
Cannot read properties of undefined (reading 'diff')
How to Fix 'Could not fetch repl metadata' in Replit
Could not fetch repl metadata
How to Fix 'Dependency installation failed' in Lovable
Dependency installation failed
How to Fix 'Deployment failed: missing start command' in Replit
Deployment failed: missing start command
How to Fix 'Edge function error: missing environment variables' in Supabase
Edge function error: missing environment variables
How to Fix 'Editor failed to apply AI patch' in Cursor
Editor failed to apply AI patch
How to Fix 'Element not found in current version' in Bubble
Element not found in current version
How to Fix 'Error evaluating formula in Make' in Make (Integromat)
Error evaluating formula in Make
How to Fix 'Error initializing plugin element' in Bubble
Error initializing plugin element
How to Fix 'Error parsing data from trigger' in Zapier
Error parsing data from trigger
How to Fix 'Error parsing Firestore snapshot' in Firebase
Error parsing Firestore snapshot
How to Fix 'Error saving edits — please refresh' in Framer
Error saving edits — please refresh
How to Fix 'Error saving workflow changes' in Bubble
Error saving workflow changes
How to Fix 'Failed to publish project: Build step failed' in Lovable
Failed to publish project: Build step failed
How to Fix 'Missing required field in module configuration' in Make
Missing required field in module configuration
How to Fix 'Missing required file: index.html' in Vercel v0
Missing required file: index.html
How to Fix 'Plugin load failed' in Bubble
Plugin load failed
How to Fix 'Project failed to publish' in Framer
Project failed to publish
How to Fix 'Rate limit exceeded by app' in Zapier
Rate limit exceeded by app
How to Fix 'Repl crashed: out of memory' in Replit
Repl crashed: out of memory
How to Fix 'Row level security policy blocked insert' in Supabase
Row level security policy blocked insert
How to Fix 'Scenario execution stopped by error' in Make (Integromat)
Scenario execution stopped by error
How to Fix 'Scenario failed: module returned invalid data' in Make
Scenario failed: module returned invalid data
How to Fix 'SyntaxError: invalid syntax' in Replit
SyntaxError: invalid syntax
How to Fix 'The model gpt-4o does not exist' in OpenAI API
The model `gpt-4o` does not exist
How to Fix 'Workflow terminated unexpectedly' in Bubble
Workflow terminated unexpectedly
How to Fix 'Zap error: app returned invalid response' in Zapier
Zap error: app returned invalid response
How to Fix 'Zap stuck in infinite loop' in Zapier
Zap stuck in infinite loop
How to Fix "Action app returned status 400" in Zapier
Action app returned status 400
How to Fix "AI builder timeout — please try again" in Lovable
AI builder timeout — please try again
How to Fix "App failed to deploy" in Bubble
App failed to deploy
How to Fix "Authentication failed — please reconnect account" in Zapier
Authentication failed — please reconnect account
How to Fix "Build failed: npm run build exited with 1" in Vercel v0
Build failed: Command 'npm run build' exited with 1
How to Fix "Code generation stuck on Thinking..." in Lovable
Code generation stuck on Thinking…
How to Fix "Command 'cursor.generate' not found" in Cursor
Command 'cursor.generate' not found
How to Fix "Error 400: Bad Request" in Supabase
Error 400: Bad Request
How to Fix "Error 404: project not found" in Firebase
Error 404: project not found
How to Fix "Error 500: Internal Server Error" in the OpenAI API
Error 500: Internal Server Error
How to Fix "Error connecting to Replit Nix environment"
Error connecting to Replit Nix environment
How to Fix "Error loading preview" in Framer
Error loading preview
How to Fix "Error parsing AI output into project files" in Lovable
Error parsing AI output into project files
How to Fix "Error: 429 Too Many Requests" in Claude (Anthropic)
Error: 429 Too Many Requests
How to Fix "Error: Failed to connect to Cursor AI service"
Error: Failed to connect to Cursor AI service
How to Fix "Error: Missing or insufficient permissions" in Firebase
Error: Missing or insufficient permissions
How to Fix "Extension host terminated unexpectedly" in Cursor
Extension host terminated unexpectedly
How to Fix "Firebase Auth: invalid API key" in Firebase
Firebase Auth: invalid API key
How to Fix "Firestore: permission-denied" in Firebase
Firestore: permission-denied
How to Fix "Git sync failed in Cursor project" in Cursor
Git sync failed in Cursor project
How to Fix "Internal server error (500)" in Claude (Anthropic)
Internal server error (500)
How to Fix "Invalid API key for Cursor AI" in Cursor
Invalid API key for Cursor AI
How to Fix "Invalid connection — please reauthorize app" in Make
Invalid connection — please reauthorize app
How to Fix "Invalid JSON in request body" in Claude (Anthropic)
Invalid JSON in request body
How to Fix "Invalid organization ID" in the OpenAI API
Invalid organization ID
How to Fix "JSON parse error in webhook response" in Make
JSON parse error in webhook response
How to Fix "Message length exceeds model context limit" in Claude
Message length exceeds model context limit
How to Fix "Missing environment variables in .env file" in Lovable
Missing environment variables in .env file
How to Fix "Module not found: Can't resolve 'next/font/google'" in v0
Module not found: Can't resolve 'next/font/google'
How to Fix "Network error: failed to fetch" in Claude (Anthropic)
Network error: failed to fetch
How to Fix "Quota exceeded for Firestore reads" in Firebase
Quota exceeded for Firestore reads
How to Fix "Realtime subscription failed" in Supabase
Realtime subscription failed
How to Fix "Repl build failed: exit code 1" in Replit
Repl build failed: exit code 1
How to Fix "Request blocked by safety system" in the OpenAI API
Request blocked by safety system
How to Fix "Request timed out" in the OpenAI API
Request timed out
How to Fix "Something went wrong while generating the app" in Lovable
Something went wrong while generating the app
How to Fix "Supabase function invocation failed" in Supabase
Supabase function invocation failed
How to Fix "Too many tokens in response" in the OpenAI API
Too many tokens in response
Module Not Found Error in Cursor
Module not found: Can't resolve '@/components/Button' in '/app/src/pages'