Prisma throws an error "TypeError: cannot read property findmany of undefined"

I wanted to make a chat app to practice working with graphql and node, for database I used prisma. I was doing everything like in this tutorial.

I just changed variable names.

so I have this code

const { PrismaClient } = require('@prisma/client')
const prisma = new PrismaClient()

const resolvers = {
  Query: {
    history: async (parent, args, context) => {
      return context.prisma.Messages.findMany()
  Mutation: {
    post: (parent, args, context) => {
      const newMessage = context.prisma.Messages.create({
        data: {
          username: args.username,
          message: args.message,
      return newMessage

const server = new GraphQLServer({
  typeDefs: './src/schema.graphql',
  context: {
server.start(() => console.log(`Server is running on http://localhost:4000`))

as my index.js

this is my schema.prisma

  provider = "sqlite"
  url      = "file:./dev.db"

generator client {
  provider = "prisma-client-js"

model Message {
  id       Int      @id @default(autoincrement())
  sendedAt DateTime @default(now())
  message  String
  username String


const { PrismaClient } = require("@prisma/client")

const prisma = new PrismaClient()

async function main() {
  const newMessage = await prisma.Messages.create({
    data: {
      message: 'Fullstack tutorial for GraphQL',
      username: '',
  const allMessages = await prisma.Messages.findMany()

  .catch(e => {
    throw e
  // 5
  .finally(async () => {
    await prisma.disconnect()

and schema.graphql

type Query {
  history: [Message!]!

type Mutation {
  post(username: String!, message: String!): Message!

type Message {
  id: ID!
  message: String!
  username: String!

and that is what i got in my playground

  "data": null,
  "errors": [
      "message": "Cannot read property 'findMany' of undefined",
      "locations": [
          "line": 2,
          "column": 3
      "path": [

please help

31 thoughts on “Prisma throws an error "TypeError: cannot read property findmany of undefined"”

  1. I am doing exactly what you are doing (from the same tutorial) and I am getting the same error. I do see your response about the lowercase, could you please explain a bit more about what you changed and how it made a difference?

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