All Errors

This error occurs when Firebase Cloud Messaging rejects a registration token because it is invalid, expired, unregistered, or no longer recognized by FCM. The fix involves validating tokens, removing stale tokens, refreshing tokens on the client side, and implementing proper token lifecycle management.

This TypeScript error occurs when configuring path aliases in tsconfig.json with incorrect syntax. Path mappings must use wildcards (*) at the beginning of the pattern to match module imports correctly. The fix involves correcting the path mapping syntax in your TypeScript configuration.

This TypeScript error occurs when you try to use JavaScript's private field syntax (#field) outside of a class declaration. Private fields with the # prefix must be declared within a class body and cannot be used in standalone functions, global scope, or outside their defining class. The error typically appears when migrating JavaScript code to TypeScript or when mixing class-based and functional programming patterns.

The PostgreSQL 'unterminated quoted string' error occurs when a SQL query contains a string literal that is missing its closing single quote. This is a parse-time syntax error that prevents the query from executing. Common causes include missing closing quotes, unescaped quotes within strings, or improper string literal formatting.

This Firebase Remote Config error occurs when you try to activate a configuration that has already been activated. Remote Config maintains version control, and this error prevents redundant activations that could cause version confusion or unnecessary updates. The fix involves checking activation status before attempting to activate and implementing proper version tracking.

This TypeScript error occurs when a project reference in tsconfig.json points to a non-existent or misconfigured TypeScript project. The fix involves verifying the referenced project exists, has the correct composite configuration, and has been built at least once to generate declaration files.

This TypeScript error occurs when you have duplicate parameter names in function signatures, method overloads, or interface definitions. The fix involves renaming duplicate parameters, using different parameter names in overload signatures, or restructuring your code to avoid naming conflicts.

This TypeScript error occurs when you declare a variable, function, or class property but never reference it in your code. It's triggered by the noUnusedLocals compiler option to help maintain clean code by removing dead code and unused declarations.

The PKCE flow state expires after 5 minutes of inactivity. This error occurs when users take too long to complete the OAuth authentication callback or attempt to use an expired authorization code. Complete the authentication flow within 5 minutes or restart the login process to fix this.

The MySQL client error 2014 occurs when you attempt to execute a new query before properly consuming all results from the previous query. This happens when client functions are called in the wrong order, leaving the client and server out of sync.

DynamoDB returns IdempotentParameterMismatchException when retrying an idempotent operation with different parameters than the original request. This error protects against unintended data modifications by ensuring retried operations use identical parameters.

This TypeScript error occurs when you try to access a property on a value that TypeScript has determined can never exist at runtime. It typically happens with incomplete union type handling or exhaustive checks. The fix involves proper type narrowing and handling all possible cases.

This TypeScript error occurs when a project reference in tsconfig.json points to a directory instead of a tsconfig.json file. Project references must explicitly reference tsconfig.json files to enable proper incremental builds and cross-project type checking. The fix involves correcting the reference path to include '/tsconfig.json' at the end.

PostgreSQL foreign key violation (ERROR 23503) occurs when you try to INSERT, UPDATE, or DELETE a row that violates a foreign key constraint. This means the referenced value does not exist in the parent table, or you're trying to delete a parent row that still has referencing child rows. Fixing requires ensuring referential integrity by inserting parent records first or using appropriate constraint actions like CASCADE.

This error occurs when MongoDB fails to create an index on a collection due to various constraints like duplicate keys, insufficient permissions, memory limits, or index key size violations. Index creation is critical for query performance but can fail on populated collections with existing data issues.

This TypeScript error occurs when a project references itself in its own tsconfig.json file, creating a circular dependency. This typically happens in monorepos or project reference configurations where a project accidentally includes itself in its references array. The fix involves removing the self-reference from the references array.

This TypeScript error occurs when you try to apply property modifiers like 'public', 'private', or 'protected' directly to a constructor declaration. Constructors in TypeScript cannot have access modifiers applied to them directly. Instead, you should use parameter properties or define properties separately in the class body.

The PostgreSQL "syntax error at or near TOKEN" error occurs when the parser encounters an unexpected keyword, symbol, or delimiter during query parsing. Common causes include missing commas, mismatched parentheses, incorrect quote usage, reserved keywords used as identifiers, and clause ordering issues. Fixing requires carefully reviewing SQL syntax and ensuring proper structure.

DynamoDB returns RequestLimitExceeded when your application exceeds account-level throughput limits, which apply to all tables in your AWS account. This error occurs when the combined throughput across all DynamoDB tables in your account exceeds AWS-imposed limits, requiring quota management and workload distribution strategies.

This TypeScript error occurs when you try to access properties on a value that TypeScript has determined is unreachable (type 'never'), often combined with non-null assertions (!). The fix involves proper type narrowing and avoiding unsafe assertions on impossible values.