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.
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
Focused on performance, clean architecture and shipping fast.
Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools.
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
Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
Expertise:
💡 Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web.
🖋️ Sharing insights through technical writing, blogging, and open-source contributions.
🤝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences.
Notable Achievements:
🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX.
🚀 Launched Compose101 — a Jetpack Compose starter kit to speed up Android development.
🌟 Open source contributions on Github & StackOverflow for Flutter & Dart
🎖️ Worked on improving app performance and user experience with smart solutions.
Milan is always happy to connect, work on new ideas, and explore the latest in technology.
Stanislav Prigodich
15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it.
Prakash Prajapati
I’m a Senior Python Developer specializing in building secure, scalable, and highly available systems. I work primarily with Python, Django, FastAPI, Docker, PostgreSQL, and modern AI tooling such as PydanticAI, focusing on clean architecture, strong design principles, and reliable DevOps practices. I enjoy solving complex engineering problems and designing systems that are maintainable, resilient, and built to scale.
Simon A.
I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.
legrab
I'll fill this later
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
My expertise lies in the critical backend infrastructure: the parts that must be fast, secure, and scalable. I thrive on high-pressure environments, such as when I had only three weeks to architect and launch an Ethereum redemption system with minimal prior crypto knowledge, turning it into a major revenue stream.
What I bring to your project:
Forensic Debugging: I don't just "patch" bugs; I use tools like Datadog and Explain Analyzers to map out bottlenecks and resolve root causes—like significantly reducing memory usage by optimizing complex DB joins.
Full-Stack Context: Deep experience in Node.js and React, ensuring backends play perfectly with mobile and web teams.
Sanity in the Age of AI: I bridge the gap between "best practices" and modern speed, ensuring your project isn't just built fast, but built to last.
Anthony Akpan
Developer with 8 years of experience building softwares fro startups
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.