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Node.js Error Codes

Node.js 22134 codes

ERR_* codes across HTTP, streams, crypto, TLS, workers and more

Showing 134 of 134 errors

Code	Message	Severity	Tier
ERR_INVALID_ARG_TYPE	An invalid argument type was provided to a function.	ERROR	Notable	→
ERR_INVALID_ARG_VALUE	An argument has a value that is out of the accepted range.	ERROR	Notable	→
ERR_OUT_OF_RANGE	A given value is out of the accepted range.	ERROR	Notable	→
ERR_MISSING_ARGS	A required function argument was not provided.	ERROR	Notable	→
ERR_UNHANDLED_ERROR	An unhandled error occurred.	ERROR	Critical	→
ERR_MODULE_NOT_FOUND	A module could not be found.	ERROR	Common	→
ERR_REQUIRE_ESM	Cannot use require() to load an ES Module.	ERROR	Common	→
ERR_PACKAGE_PATH_NOT_EXPORTED	A package path is not exported from a package.	ERROR	Common	→
ERR_INVALID_PACKAGE_TARGET	The 'exports' field of a package.json contains an invalid target.	ERROR	Common	→
ERR_UNKNOWN_FILE_EXTENSION	An unknown file extension was encountered.	ERROR	Common	→
ERR_NETWORK_IMPORT_DISALLOWED	Network-based imports are not allowed.	ERROR	Common	→
ERR_HTTP_HEADERS_SENT	Cannot set headers after they are sent to the client.	ERROR	Notable	→
ERR_HTTP_INVALID_STATUS_CODE	An invalid HTTP status code was used.	ERROR	Notable	→
ERR_SOCKET_ALREADY_ENDED	The socket has already been ended.	ERROR	Notable	→
ERR_STREAM_WRITE_AFTER_END	Cannot write to a stream after it has ended.	ERROR	Notable	→
ERR_STREAM_DESTROYED	Cannot call a method on a destroyed stream.	ERROR	Notable	→
ERR_CRYPTO_INVALID_DIGEST	An invalid crypto digest algorithm was used.	ERROR	Notable	→
ERR_CRYPTO_KEY_NOT_FOUND	A private key was not found for a certificate.	ERROR	Notable	→
ERR_CHILD_PROCESS_STDIO_MAXBUFFER	The stdio buffer of a child process exceeded its maximum size.	ERROR	Critical	→
ERR_WORKER_UNSUPPORTED_OPERATION	An unsupported operation was performed on a worker thread.	ERROR	Notable	→
ERR_FS_EISDIR	A path that is a directory was used as a file.	ERROR	Notable	→
ERR_FS_FILE_TOO_LARGE	A file is too large to be processed.	ERROR	Critical	→
ERR_BUFFER_OUT_OF_BOUNDS	A buffer operation is out of bounds.	ERROR	Notable	→
ERR_ASSERTION	An assertion failed.	ERROR	Notable	→
ERR_USE_AFTER_CLOSE	An operation was attempted on a resource that has been closed.	ERROR	Notable	→
ERR_REQUIRE_CYCLE_MODULE	Circular require() dependency detected in CJS/ESM interop	WARNING	Notable	→
ERR_UNSUPPORTED_DIR_IMPORT	Directory import is not supported in ES modules	ERROR	Notable	→
ERR_PACKAGE_IMPORT_NOT_EXPORTED	Package subpath is not defined in package.json "imports"	ERROR	Notable	→
ERR_VM_MODULE_NOT_MODULE	Value passed to vm linker is not a vm.Module instance	ERROR	Critical	→
ERR_VM_MODULE_ALREADY_LINKED	vm.Module.link() called on an already-linked module	ERROR	Critical	→
ERR_VM_MODULE_CANNOT_CREATE_CACHED_DATA	Cannot create cached data for an already-evaluated vm module	ERROR	Critical	→
ERR_VM_MODULE_LINK_FAILURE	vm.Module linking failed due to an error in the linker	ERROR	Critical	→
ERR_VM_MODULE_STATUS	vm.Module operation invalid for current module status	ERROR	Critical	→
ERR_HTTP_TRAILER_INVALID	HTTP trailer set without chunked transfer encoding	ERROR	Notable	→
ERR_HTTP_INVALID_HEADER_NAME	HTTP header name contains invalid characters	ERROR	Notable	→
ERR_HTTP_INVALID_HEADER_VALUE	HTTP header value contains invalid characters	ERROR	Notable	→
ERR_HTTP_REQUEST_TIMEOUT	HTTP request timed out before completing	ERROR	Notable	→
ERR_HTTP_SOCKET_ASSIGNED	HTTP socket already assigned to another response	ERROR	Notable	→
ERR_HTTP_SOCKET_ENCODING	Cannot change encoding on HTTP socket	ERROR	Notable	→
ERR_HTTP_CONTENT_LENGTH_MISMATCH	Response body size does not match Content-Length header	ERROR	Notable	→
ERR_HTTP_BODY_NOT_ALLOWED	HTTP response body not allowed for this status code	ERROR	Notable	→
ERR_HTTP2_HEADERS_SENT	HTTP/2 headers already sent for this stream	ERROR	Notable	→
ERR_HTTP2_INVALID_STREAM	Operation attempted on a destroyed or closed HTTP/2 stream	ERROR	Notable	→
ERR_HTTP2_STREAM_CANCEL	HTTP/2 stream was cancelled before completion	WARNING	Notable	→
ERR_HTTP2_TRAILERS_ALREADY_SENT	HTTP/2 trailers already sent on this stream	ERROR	Critical	→
ERR_HTTP2_SETTINGS_CANCEL	HTTP/2 settings request was cancelled	ERROR	Critical	→
ERR_HTTP2_CONNECT_AUTHORITY	HTTP/2 CONNECT request missing :authority pseudo-header	ERROR	Notable	→
ERR_HTTP2_CONNECT_PATH	HTTP/2 CONNECT request must not include :path pseudo-header	ERROR	Notable	→
ERR_HTTP2_CONNECT_SCHEME	HTTP/2 CONNECT request must not include :scheme pseudo-header	ERROR	Notable	→
ERR_HTTP2_PSEUDOHEADER_NOT_ALLOWED	HTTP/2 pseudo-header used in an invalid context	ERROR	Notable	→
ERR_HTTP2_STATUS_101	HTTP/2 does not support status 101 (Switching Protocols)	ERROR	Notable	→
ERR_STREAM_PUSH_AFTER_EOF	Stream push() called after EOF has been emitted	ERROR	Notable	→
ERR_STREAM_UNSHIFT_AFTER_END_EVENT	Stream unshift() called after end event	ERROR	Notable	→
ERR_STREAM_PREMATURE_CLOSE	Stream was closed before it finished	ERROR	Notable	→
ERR_STREAM_NULL_VALUES	Non-object-mode stream received null value	ERROR	Notable	→
ERR_STREAM_CANNOT_PIPE	Cannot pipe into a stream that is not writable	ERROR	Notable	→
ERR_STREAM_OVER_LIMIT	Stream read exceeded the configured high-water mark limit	ERROR	Notable	→
ERR_STREAM_ALREADY_FINISHED	Stream operation called after stream has finished	ERROR	Notable	→
ERR_STREAM_READ_NOT_IMPLEMENTED	Readable stream subclass did not implement _read()	ERROR	Notable	→
ERR_BUFFER_TOO_LARGE	Buffer size exceeds the maximum allowed limit	ERROR	Notable	→
ERR_INVALID_BUFFER_SIZE	Buffer size is not a multiple of the word size	ERROR	Notable	→
ERR_BUFFER_CONTEXT_NOT_AVAILABLE	Buffer is not available in the current V8 context	ERROR	Critical	→
ERR_CRYPTO_INVALID_KEY_OBJECT_TYPE	Crypto key object type is invalid for this operation	ERROR	Notable	→
ERR_CRYPTO_INCOMPATIBLE_KEY	Crypto key is incompatible with the requested operation	ERROR	Notable	→
ERR_CRYPTO_SIGN_KEY_REQUIRED	No key provided for crypto signing operation	ERROR	Notable	→
ERR_CRYPTO_UNSUPPORTED_OPERATION	Crypto operation is not supported	ERROR	Notable	→
ERR_CRYPTO_HASH_FINALIZED	Hash update() called after digest() was already called	ERROR	Notable	→
ERR_CRYPTO_HASH_UPDATE_FAILED	Hash update() failed internally	ERROR	Notable	→
ERR_CRYPTO_ECDH_INVALID_FORMAT	Invalid format for ECDH public key	ERROR	Notable	→
ERR_CRYPTO_INVALID_STATE	Crypto operation called on object in invalid state	ERROR	Notable	→
ERR_TLS_CERT_ALTNAME_INVALID	TLS certificate Subject Alternative Name does not match the hostname	ERROR	Common	→
ERR_TLS_DH_PARAM_SIZE	TLS Diffie-Hellman parameter size is too small	WARNING	Notable	→
ERR_TLS_INVALID_CONTEXT	TLS context is not a valid SecureContext	ERROR	Notable	→
ERR_TLS_SNI_FROM_SERVER	TLS SNI extension cannot be issued from a server socket	ERROR	Critical	→
ERR_TLS_SESSION_ATTACK	Excessive TLS session resumptions detected	WARNING	Notable	→
ERR_TLS_CERT_ALTNAME_FORMAT	TLS certificate SAN contains an invalid character	ERROR	Notable	→
ERR_TLS_RENEGOTIATION_DISABLED	TLS renegotiation was attempted but is disabled	ERROR	Notable	→
ERR_TLS_RENEGOTIATION_FAILED	TLS renegotiation request failed	ERROR	Notable	→
ERR_CHILD_PROCESS_IPC_REQUIRED	IPC channel required but not established for child process	ERROR	Notable	→
ERR_CHILD_PROCESS_UNSUPPORTED_OPTION	Unsupported option passed to child_process function	ERROR	Notable	→
ERR_INVALID_REPL_EVAL_CONFIG	REPL eval and useGlobal options are mutually exclusive	ERROR	Critical	→
ERR_CHILD_CLOSED_BEFORE_REPLY	Child process closed before sending a reply	ERROR	Notable	→
ERR_MISSING_PLATFORM_FOR_WORKER	Worker threads not available — platform not supported	ERROR	Notable	→
ERR_WORKER_INIT_FAILED	Worker thread initialisation failed	ERROR	Notable	→
ERR_WORKER_OUT_OF_MEMORY	Worker thread ran out of memory	CRITICAL	Common	→
ERR_WORKER_PATH	Worker script path is invalid	ERROR	Notable	→
ERR_WORKER_INVALID_EXEC_ARGV	Invalid execArgv passed to Worker constructor	ERROR	Notable	→
ERR_WORKER_NOT_RUNNING	Operation failed because worker thread is not running	ERROR	Notable	→
ERR_FS_INVALID_SCHEME	File URL has an invalid or unsupported scheme	ERROR	Notable	→
ERR_FS_CP_DIR_TO_NON_DIR	Cannot copy a directory to a non-directory destination	ERROR	Notable	→
ERR_FS_CP_EEXIST	Destination file already exists and force is not set	ERROR	Notable	→
ERR_FS_CP_FIFO_PIPE	Cannot copy a FIFO or pipe with fs.cp()	ERROR	Critical	→
ERR_FS_CP_NON_DIR_TO_DIR	Cannot copy a non-directory source to a directory destination	ERROR	Notable	→
ERR_FS_CP_SOCKET	Cannot copy a Unix domain socket with fs.cp()	ERROR	Critical	→
ERR_FS_CP_UNKNOWN	fs.cp() encountered a file of unknown type	ERROR	Critical	→
ERR_DNS_SET_SERVERS_FAILED	Failed to set DNS servers	ERROR	Notable	→
ERR_INVALID_IP_ADDRESS	Invalid IP address string	ERROR	Notable	→
ERR_SOCKET_BAD_PORT	Socket port is outside the valid range 0-65535	ERROR	Notable	→
ERR_SOCKET_DGRAM_NOT_RUNNING	UDP socket is not running	ERROR	Notable	→
ERR_SOCKET_ALREADY_CONNECTED	Socket is already connected	ERROR	Notable	→
ERR_SOCKET_BAD_TYPE	Invalid socket type specified	ERROR	Notable	→
ERR_SOCKET_CANNOT_SEND	Data cannot be sent on this socket	ERROR	Notable	→
ERR_SOCKET_CLOSED	Socket has been closed	ERROR	Notable	→
ERR_SOCKET_DGRAM_IS_CONNECTED	dgram socket is already connected	ERROR	Notable	→
ERR_FALSY_VALUE_REJECTION	Promise rejected with a falsy value	WARNING	Notable	→
ERR_MULTIPLE_CALLBACK	Callback called more than once	ERROR	Notable	→
ERR_ASYNC_CALLBACK	Async hook callback must be a function	ERROR	Critical	→
ERR_ASYNC_TYPE	Async resource type must be a string	ERROR	Critical	→
ERR_INVALID_CALLBACK	Callback argument must be a function	ERROR	Notable	→
ERR_INVALID_THIS	Function called with invalid this context	ERROR	Notable	→
ERR_INVALID_CURSOR_POS	Cursor position is invalid for readline	ERROR	Critical	→
ERR_INVALID_FD	File descriptor is not valid	ERROR	Notable	→
ERR_EVENT_RECURSION	Recursive event dispatch detected	ERROR	Notable	→
ERR_PROCESS_ALREADY_EXITED	Child process has already exited	ERROR	Notable	→
ERR_AMBIGUOUS_ARGUMENT	Function argument is ambiguous or cannot be used as specified	ERROR	Notable	→
ERR_NAPI_TSFN_STOP_IDLE_LOOP	Failed to stop the libuv idle loop for thread-safe function	ERROR	Critical	→
ERR_MISSING_MESSAGE_PORT_IN_TRANSFER_LIST	MessagePort in message data must also be in transfer list	ERROR	Notable	→
ERR_ENCODING_INVALID_ENCODED_DATA	Encoded data is invalid for the specified encoding	ERROR	Notable	→
ERR_ENCODING_NOT_SUPPORTED	The specified encoding is not supported	ERROR	Notable	→
ERR_INVALID_PROTOCOL	Invalid protocol specified for the request	ERROR	Notable	→
ERR_UNESCAPED_CHARACTERS	URL contains unescaped characters that are not allowed	ERROR	Notable	→
ERR_INSPECTOR_ALREADY_ACTIVATED	Inspector is already activated	ERROR	Critical	→
ERR_INSPECTOR_ALREADY_CONNECTED	Inspector session is already connected	ERROR	Critical	→
ERR_INSPECTOR_CLOSED	Inspector session was closed	ERROR	Critical	→
ERR_INSPECTOR_COMMAND	Inspector command failed	ERROR	Critical	→
ERR_WASI_ALREADY_STARTED	WASI instance has already been started	ERROR	Critical	→
ERR_WASI_NOT_STARTED	WASI instance has not been started	ERROR	Critical	→
ERR_NAPI_INVALID_TYPEDARRAY_ALIGNMENT	TypedArray buffer is not properly aligned for native addon	ERROR	Critical	→
ERR_ACCESS_DENIED	Access denied by the Node.js permission model	ERROR	Common	→
ERR_ILLEGAL_CONSTRUCTOR	Class cannot be constructed directly	ERROR	Common	→
ERR_SOCKET_CLOSED_BEFORE_CONNECTION	Socket was destroyed before connection was established	ERROR	Notable	→
ERR_HTTP2_MAX_PENDING_SETTINGS_ACK	Too many unacknowledged HTTP/2 SETTINGS frames	ERROR	Notable	→
ERR_HTTP2_INVALID_HEADER_VALUE	HTTP/2 header contains an invalid value	ERROR	Common	→
ERR_INVALID_HANDLE_TYPE	Invalid handle type passed to child_process.send()	ERROR	Common	→