All Errors

This error occurs when Firebase App Check cannot verify the authenticity of requests to your Firebase services. Token validation failures can stem from misconfigured providers, server time mismatches, expired tokens, or incorrect app registration.

PostgreSQL error 2202H occurs when a TABLESAMPLE clause receives an invalid argument. The sampling percentage must be between 0 and 100, and arguments must be numeric constants that can be evaluated at query planning time.

PostgreSQL error 42P01 occurs when you query or reference a table that doesn't exist in your database. Fix it by verifying the table name spelling, checking the schema, running migrations, or quoting identifiers for case-sensitive names.

MySQL Error 2001 (CR_SOCKET_CREATE_ERROR) occurs when the MySQL client cannot create or access a UNIX socket file needed for local database connections. This is typically caused by file descriptor limits, permission issues on the socket directory, or missing socket directories. The error occurs at the OS level before reaching the MySQL server.

PostgreSQL error 0LP01 occurs when attempting an invalid GRANT operation, such as granting privileges you don't own or granting a role to itself. Verify ownership of the object, check user privileges, and ensure correct GRANT syntax to resolve this.

PostgreSQL prevents aggregate functions like SUM(), COUNT(), AVG(), or MAX() in WHERE clauses because WHERE filters rows before aggregation occurs. To filter on aggregate results, use the HAVING clause after GROUP BY, or wrap your query in a subquery or CTE to compute aggregates first.

This error occurs when a request is sent to a Supabase Edge Function that doesn't exist, hasn't been deployed, or the URL is incorrect. It typically returns a 404 HTTP response with error code EF002.

PostgreSQL throws 2200L (not_an_xml_document) when a string is well-formed XML but does not conform to CONTENT restrictions in XMLPARSE or xml operations. This typically happens when you attempt to parse an XML fragment or multiple root elements as a document, or when DOCTYPE declarations or processing instructions violate the expected CONTENT vs DOCUMENT distinction.

The auth/invalid-page-token error occurs when paginating through Firebase users with an expired or invalid pageToken. Fix it by using tokens immediately after receiving them and always restarting pagination from the beginning if a token expires.

The iOS bundle ID is missing or not properly configured in Firebase. This error occurs when your iOS app's bundle identifier doesn't match what's registered in Firebase Console or when the GoogleService-Info.plist file is missing.

The PostgreSQL error 42P08 (ambiguous_parameter) occurs when a prepared statement or parameterized query contains parameter placeholders that the database cannot uniquely resolve. This typically happens when parameter types cannot be determined from context, or when the same parameter is used in contexts with conflicting type requirements.

This error occurs when you try to log a Firebase Analytics event with an invalid event name. Firebase enforces strict naming rules to maintain data quality and consistency across your analytics.

The PGRST103 error (HTTP 416: Range Not Satisfiable) occurs when you request a data range using .range() or pagination parameters that exceeds the available rows in your Supabase table. This guide walks through validating pagination bounds, fetching total counts before querying, and handling out-of-bounds requests gracefully.

This error occurs when you attempt to create or update a user password in Supabase Auth that doesn't meet the configured password strength requirements. Your password may be too short, lack required character types, or be a known compromised password.

Firestore transactions require an active network connection to the backend and will fail immediately when the client is offline. This is by design—transactions need to read and verify data on the server to ensure consistency.

PostgreSQL "insufficient privilege to bypass row security" error occurs when a user attempts to access or modify rows in a table with Row-Level Security (RLS) policies enabled, but lacks the BYPASSRLS privilege. This is a security feature that enforces data access restrictions. Fix by granting BYPASSRLS attribute to the role or by creating appropriate RLS policies for the user.

This error occurs when you attempt to calculate a power (exponentiation) with mathematically invalid arguments to PostgreSQL functions like POWER() or POW(). Common causes include raising a negative base to a fractional exponent or zero raised to a negative power, which would result in complex numbers or undefined values that PostgreSQL cannot represent.

The "session_not_found" error occurs when Supabase Auth detects that the session ID in your JWT token no longer exists in the auth.sessions table. This typically happens due to session expiration, token refresh failures, or URL mismatches between your Supabase configuration and frontend application.

The "NOGOODSLAVE No good slave available for failover" error occurs in Redis Sentinel when attempting a failover but no healthy replica instances are available to promote to master. This typically happens when all replicas are offline, lagging, or unreachable.

SQLSTATE 22002 occurs when a NULL value is fetched from the database but no indicator variable was specified to capture its null status. This commonly happens in embedded SQL (ECPG) or applications using cursor variables without proper null handling.