Supabase Common Errors

Overview

Quick reference for the top 10 most common Supabase errors and their solutions.

Error Reference

1. Invalid JWT

Error Message:

Invalid JWT: expired or malformed

Cause: JWT token has expired or is incorrectly formatted

Solution:

Check token expiry with supabase.auth.getSession() and call refreshSession() if needed

2. RLS Policy Violation

Error Message:

new row violates row-level security policy for table

Cause: Row Level Security (RLS) policy is blocking the operation

Solution: Check RLS policies in dashboard or via pg_policies table. Ensure user has required role.

3. Connection Pool Exhausted

Error Message:

too many clients already

Cause: Connection pool limit reached due to too many concurrent connections

Solution:

Use connection pooling mode in Supabase dashboard. Switch to Session mode or pgBouncer.

4. Invalid Request

Error Message:

Invalid request: missing required field

Cause: Request payload missing required fields.

Solution: Validate request before sending. Check API docs for required fields.

5. Resource Not Found

Error Message:

Resource not found: 404

Cause: Referenced resource does not exist or was deleted.

Solution: Verify resource ID. Check if resource was recently deleted.

6-10. Additional Errors

See Supabase documentation for additional error codes.

Quick Diagnostic Commands

# Check Supabase status
curl -s https://status.supabase.com

# Verify API connectivity
curl -I https://api.supabase.com

# Check local configuration
env | grep SUPABASE

Escalation Path

If errors persist after trying solutions:

1. Collect evidence with supabase-debug-bundle
2. Check Supabase status page
3. Contact support with request ID

Next Steps

For comprehensive debugging, see supabase-debug-bundle.