Your query looks correct – yet the Supabase JS client throws: JSON object requested, multiple (or no) rows returned code: PGRST116 This almost always comes from .single() (or…
Your RLS policies look fine – yet the Supabase client throws: permission denied for table projects ERROR: 42501 Or PostgREST shows 42501 / “permission denied”. This is not the…
Your upload code looks correct, the user is signed in – yet Supabase Storage responds with: StorageApiError: new row violates row-level security policy statusCode: 403 You often…
Your Edge Function works locally – but from the browser or via fetch you only get: {"code":401,"message":"Invalid JWT"} Or: Missing authorization header. This guide walks through…
Your login form looks fine, email and password seem correct – yet Supabase Auth responds with: AuthApiError: Invalid login credentials Or in the Network tab: 400 with…
You wrote an RLS policy that checks another table – and suddenly Supabase throws: ERROR: infinite recursion detected in policy for relation "profiles" In this article I'll show…
Want to build a professional crypto trading bot that not only trades but also stores and analyzes all data systematically? The combination of Binance API and Supabase as a backend…
Build a fully functional ChatGPT clone using Supabase Edge Functions, OpenAI's API, and React. This comprehensive guide covers everything from authentication to real-time…
Last updated: August 2026File uploads are one of the most common features in modern web apps, but implementing them correctly with Supabase Storage can be tricky. Many developers…
CORS errors are among the most frustrating problems when developing with Supabase Edge Functions. They work perfectly in Postman or Insomnia, but as soon as you call them from the…