Error map

buffering timed out MongooseError: Operation `users.find()` buffering timed out after 10000ms

Node.js · layer 4, Application & API

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Centre: this error. First ring: errors it is linked with (7). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.

2 · Network 4 · Application & API 5 · Data
buffering timed out — MongooseError: Operation `users.find()` buffering timed out after 10000ms (Node.js)buffering t…CastError ObjectId — CastError: Cast to ObjectId failed for value "x" (type string) at path "_id" (Node.js)CastError ObjectIdMongoServerSelectionError — MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017 (Node.js)MongoServerSelectio…Mongoose ValidationError — ValidationError: User validation failed: email: Path `email` is required. (Node.js)Mongoose Validation…HikariCP timeout — HikariPool-1 - Connection is not available, request timed out after 30000ms (Java)HikariCP timeoutPrisma P1001 — Error: P1001: Can't reach database server at `host`:`5432` (Node.js)Prisma P1001SequelizeConnectionRefusedError — SequelizeConnectionRefusedError: connect ECONNREFUSED 127.0.0.1:5432 (Node.js)SequelizeConnection…E11000 duplicate key — MongoServerError: E11000 duplicate key error collection: db.users index: email_1 dup key (Node.js)E11000 duplicate key422 — HTTP 422 Unprocessable Content (HTTP)422NumberFormatException — java.lang.NumberFormatException: For input string: "x" (Java)NumberFormatExcepti…IllegalArgumentException — java.lang.IllegalArgumentException (Java)IllegalArgumentExce…ECONNREFUSED — Error: connect ECONNREFUSED 127.0.0.1:5432 (Node.js)ECONNREFUSEDbad auth : Authentication failed — MongoDB: MongoServerError: bad auth : Authentication failed (code 8000 / 18) (MongoDB)bad auth : Authenti…MongoParseError — MongoDB: MongoParseError: Invalid scheme, expected connection string to start with "mongodb://" or "mongodb+srv://" (MongoDB)MongoParseErrorreq.body undefined — Express: req.body is undefined / {} (body parser missing) (Node.js)req.body undefinedinvalid_type — API Error: Invalid type — expected integer, received string (API)invalid_typeinvalid_value — API Error: Invalid parameter value — must be one of the allowed values / out of range (API)invalid_value2002 — MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket (MySQL)20022006 — MySQL ERROR 2006 (HY000): MySQL server has gone away (MySQL)2006Lock wait timeout — Lock wait timeout exceeded; try restarting transaction (MySQL 1205) (SQL)Lock wait timeoutcould not connect — PostgreSQL: could not connect to server / connection refused — Is the server running on host and accepting TCP/IP connections? (PostgreSQL)could not connectPrisma P2002 — PrismaClientKnownRequestError P2002: Unique constraint failed on the fields: (`email`) (Node.js)Prisma P2002prisma generate — Error: @prisma/client did not initialize yet. Please run "prisma generate" (Node.js)prisma generateLazyInitializationException — org.hibernate.LazyInitializationException: could not initialize proxy - no Session (Java)LazyInitializationE…TransientObjectException — org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing (Java)TransientObjectExce…Hibernate ConstraintViolationException — org.hibernate.exception.ConstraintViolationException: could not execute statement (Java)Hibernate Constrain…1062 — MySQL ERROR 1062 (23000): Duplicate entry for key (MySQL)106223505 — PostgreSQL: ERROR: duplicate key value violates unique constraint (PostgreSQL)23505ALREADY_EXISTS — API Error: Resource already exists (ALREADY_EXISTS / resource_already_exists / 409) (API)ALREADY_EXISTS

Directly related (7)

CastError ObjectIdNode.js

CastError: Cast to ObjectId failed for value "x" (type string) at path "_id"

A value that isn’t a valid 24-hex-character ObjectId was used in an _id query.

MongoServerSelectionErrorNode.js

MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017

The MongoDB driver couldn’t find a reachable server for the connection string.

Mongoose ValidationErrorNode.js

ValidationError: User validation failed: email: Path `email` is required.

A document failed Mongoose schema validation before saving.

HikariCP timeoutJava

HikariPool-1 - Connection is not available, request timed out after 30000ms

The connection pool was exhausted — all connections were busy for 30 seconds.

Prisma P1001Node.js

Error: P1001: Can't reach database server at `host`:`5432`

Prisma couldn’t connect to the database in DATABASE_URL.

SequelizeConnectionRefusedErrorNode.js

SequelizeConnectionRefusedError: connect ECONNREFUSED 127.0.0.1:5432

Sequelize couldn’t connect to the database server.

E11000 duplicate keyNode.js

MongoServerError: E11000 duplicate key error collection: db.users index: email_1 dup key

An insert/update violated a unique index in MongoDB.

Two steps away (21)

422HTTP

HTTP 422 Unprocessable Content

The request is well-formed, but the data fails validation (e.g. invalid email, missing required field).

NumberFormatExceptionJava

java.lang.NumberFormatException: For input string: "x"

A string couldn’t be parsed as a number — it’s empty, has spaces/commas, is too large, or isn’t numeric.

IllegalArgumentExceptionJava

java.lang.IllegalArgumentException

A method rejected an argument value as invalid.

ECONNREFUSEDNode.js

Error: connect ECONNREFUSED 127.0.0.1:5432

Nothing is listening at that host:port — the target service is down or you’re connecting to the wrong address.

bad auth : Authentication failedMongoDB

MongoDB: MongoServerError: bad auth : Authentication failed (code 8000 / 18)

MongoDB (often Atlas) rejected the username/password in the connection string.

MongoParseErrorMongoDB

MongoDB: MongoParseError: Invalid scheme, expected connection string to start with "mongodb://" or "mongodb+srv://"

The connection string is missing, malformed, or the environment variable holding it is undefined.

req.body undefinedNode.js

Express: req.body is undefined / {} (body parser missing)

Express didn’t parse the request body because no body-parsing middleware matched the request’s Content-Type.

invalid_typeAPI

API Error: Invalid type — expected integer, received string

A request field has the wrong data type — a string where the API expects a number, a number where it expects a boolean, an object…

invalid_valueAPI

API Error: Invalid parameter value — must be one of the allowed values / out of range

The field has the right type but a value the API doesn’t allow — not in the list of accepted options, too small or large, too lon…

2002MySQL

MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket

The client couldn’t reach the MySQL server — it isn’t running, or the client is looking for the socket/port in the wrong place.

2006MySQL

MySQL ERROR 2006 (HY000): MySQL server has gone away

The connection to MySQL was closed — usually by a timeout or a packet larger than `max_allowed_packet`.

Lock wait timeoutSQL

Lock wait timeout exceeded; try restarting transaction (MySQL 1205)

A query waited too long for a row lock held by another transaction and gave up.

could not connectPostgreSQL

PostgreSQL: could not connect to server / connection refused — Is the server running on host and accepting TCP/IP connections?

The client reached no PostgreSQL listener at that host/port — the server is down, listening elsewhere, or not accepting remote co…

Prisma P2002Node.js

PrismaClientKnownRequestError P2002: Unique constraint failed on the fields: (`email`)

A Prisma create/update violated a unique constraint.

prisma generateNode.js

Error: @prisma/client did not initialize yet. Please run "prisma generate"

The generated Prisma Client is missing or out of date.

LazyInitializationExceptionJava

org.hibernate.LazyInitializationException: could not initialize proxy - no Session

A lazy-loaded association was accessed after the Hibernate session/transaction closed.

TransientObjectExceptionJava

org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing

An entity references another entity that hasn’t been saved yet, and no cascade is configured.

Hibernate ConstraintViolationExceptionJava

org.hibernate.exception.ConstraintViolationException: could not execute statement

The database rejected an insert/update because of a constraint (unique, foreign key, not null).

1062MySQL

MySQL ERROR 1062 (23000): Duplicate entry for key

An INSERT/UPDATE would create a duplicate value in a PRIMARY or UNIQUE key.

23505PostgreSQL

PostgreSQL: ERROR: duplicate key value violates unique constraint

An INSERT/UPDATE would create a duplicate in a UNIQUE or PRIMARY KEY column — or the id sequence is behind the existing data.

ALREADY_EXISTSAPI

API Error: Resource already exists (ALREADY_EXISTS / resource_already_exists / 409)

The create request was refused because an object with the same unique identity — name, email, external ID — already exists.

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