Common Issues
general
File Upload Not Working in My AI App
Users try to upload files (images, documents, etc.) and the upload fails, shows an error, takes forever, or the file seems to upload successfully but then disappears or can't be accessed.
Error Messages You Might See
413 Payload Too Large
Failed to fetch
Storage object not found
Bucket not found
Permission denied
Common Causes
- File size exceeds the server or hosting platform's limit
- Storage bucket not configured or permissions wrong
- Upload saves to local filesystem which doesn't persist on serverless platforms
- CORS blocking the upload request to the storage service
- File type validation rejecting valid files
How to Fix It
- Check the browser Network tab for the upload request — see the error response
- Try uploading a very small file (under 1MB) to rule out size limits
- Verify your storage configuration (Supabase Storage, S3, etc.) is correct in production
- Check storage bucket permissions — uploads need write access
- If using serverless hosting, make sure you're uploading to cloud storage, not the local filesystem
Real developers can help you.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Mehdi Ben Haddou
- Founder of Chessigma (1M+ users) & many small projects
- ex Founding Engineer @Uplane (YC F25)
- ex Software Engineer @Amazon and @Booking.com
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact.
Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
BurnHavoc
Been around fixing other peoples code for 20 years.
Jacek Rozanski
Senior PHP/Symfony developer and DevOps engineer with 20+ years of professional experience, running opcode.pl (web development agency, est. 2004).
Day job: I'm the sole backend developer at merketing company where I own and maintain 11 PHP/Symfony microservices on AWS (ECS Fargate, RDS, S3, CloudFront), handle the full CI/CD pipeline (Bitbucket Pipelines, Docker), and manage monitoring with Sentry and CloudWatch. These services handle high request volumes in production every month.
What I bring to AI-built apps:
- I audit and fix security issues (OWASP methodology), performance bottlenecks, and architectural problems in codebases generated by Cursor, Claude Code, Lovable, Bolt, and v0
- I refactor AI-generated prototypes into production-grade applications with proper error handling, testing, and clean architecture (SOLID, DDD, hexagonal architecture)
- I set up the infrastructure AI tools don't touch: AWS hosting, CI/CD pipelines, automated deployments, database optimization, monitoring, and alerting
- I integrate external services: payment providers, email systems, partner APIs, SSO/auth
Tech stack: PHP 8.x, Symfony, React, Next.js, PostgreSQL, MySQL, Docker, AWS (ECS, RDS, S3, SQS/SNS, CloudFront), Terraform, Supabase. I also use AI tools daily (Claude Code, Cursor) in my own workflow, so I understand both the strengths and the gaps in AI-generated code.
Based in Poland (CET timezone). Available for async work and calls during EU/US business hours.
Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
did projects with React+Capacitor.js for ios
Supabase expert
Bastien Labelle
Full stack dev w/ 20+ years of experience
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Describe what's wrong in plain English. No technical knowledge needed.
Get HelpFrequently Asked Questions
Files upload but then disappear. What's happening?
Your app is probably saving files to the server's local filesystem, which gets wiped on each deploy. You need to use cloud storage (Supabase Storage, S3, etc.) instead.
Upload works for small files but fails for large ones. Why?
There's likely a file size limit on the server, hosting platform, or in the code. A developer can increase the limits and add proper large file handling.