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Creating bug reports


You can help us improve Prisma ORM by creating bug reports. When creating a bug report, it's important that you include as much information as possible about your issue. That way, it's easier to reproduce.

Note that you can also create feature requests or ask a question via the issue templates on GitHub.

Where to open the bug report on GitHub?

Prisma ORM's tools are spread across different repositories in the prisma organization on GitHub. You can open a new issue in the repo of the respective tool.

If you're unsure where to open the GitHub issue, you can use the main prisma/prisma repo as a default. Our engineering team is regularly triaging new issues and will move the issue to another repo if necessary.

Ideal scenario: Share standalone repository with reproduction

In an ideal scenario, you're able to reproduce the bug in an isolated environment and put it into a GitHub repository that you can share in your report. That way, we already have a reproduction and the problem can be tackled without further triaging.

This StackOverflow guide has a lot of helpful information for creating minimal, reproducible examples.

Best practices for writing a bug report

If you don't have the time to create a full reproduction of the issue, please include as much information as possible about the problem. The bug report template helps you with that.

Include logging and debugging output

Please make sure to include any logging and debugging output in the issue that may help to identify the problem.

Setting the DEBUG env var

To get additional output from Prisma ORM, you can set DEBUG to *:

export DEBUG="*"

Print logs of Prisma Client

You can enable additional logs in Prisma Client by instantiating it with the log option:

const prisma = new PrismaClient({ log: ['query', 'info', 'warn'] })

Include a bug description, reproduction and expected behavior

When describing the bug, it's helpful to include the following information:

  • A clear and concise description of what the bug is
  • Steps to reproduce the bug
  • A clear and concise description of what you expected to happen
  • Screenshots (if applicable)
Expand for an example for a hypothetical bug report


Describe the bug

@unique attribute on email field doesn't work on my model. I can create duplicate records with the same email.

To reproduce:

I have this Prisma schema (removed all unnecessary models and fields):

model User {
id Int @id @default(autoincrement())
email String @unique

I then run prisma generate to generate Prisma Client.

I then have a Node.js script that creates two User records with the same email:

import { PrismaClient } from '@prisma/client'

const prisma = new PrismaClient()

// A `main` function so that we can use async/await
async function main() {
const user1 = await prisma.create({
data: { email: '' },
const user2 = await prisma.create({
data: { email: '' },
console.log(user1, user2)

.then(async () => {
await prisma.$disconnect()
.catch(async (e) => {
await prisma.$disconnect()

Expected behavior

I expected an exception when trying to create user2 with the same email as user1 because this violates the @unique constraint defined in the Prisma schema.

Include environment and setup information

Please include any information about your environment and setup. Specifically it's important to include:

  • Which operating system you use (e.g. macOS, Windows, Debian, CentOS, ...)
  • Which database you use with Prisma ORM (PostgreSQL, MySQL, MariaDB, SQLite or Microsoft SQL Server)
  • Which version of Prisma ORM you use (run prisma -v to see your Prisma ORM version)
  • Which version of Node.js you use (run node -v to see your Node.js version)

Here's an example of what this could look like in your bug report:

  • OS: macOS Catalina 10.15.7
  • Database: PostgreSQL v11
  • Node.js version: v14.16.1
  • Prisma ORM version:
prisma               : 2.22.0
@prisma/client : Not found
Current platform : darwin
Query Engine : query-engine 60cc71d884972ab4e897f0277c4b84383dddaf6c (at ../../../../../.npm/_npx/31227/lib/node_modules/prisma/node_modules/@prisma/engines/query-engine-darwin)
Migration Engine : migration-engine-cli 60cc71d884972ab4e897f0277c4b84383dddaf6c (at ../../../../../.npm/_npx/31227/lib/node_modules/prisma/node_modules/@prisma/engines/migration-engine-darwin)
Format Binary : prisma-fmt 60cc71d884972ab4e897f0277c4b84383dddaf6c (at ../../../../../.npm/_npx/31227/lib/node_modules/prisma/node_modules/@prisma/engines/prisma-fmt-darwin)
Default Engines Hash : 60cc71d884972ab4e897f0277c4b84383dddaf6c
Studio : 0.379.0

Additionally, you can use the prisma debug command to retrieve debugging information. The prisma debug command provides debugging information that compliments the output of the prisma -v command. The information includes environment variables used for Prisma Client, Prisma Migrate, Prisma CLI, and Prisma Studio.


The prisma debug command is available from version 5.6.0 and newer. If you're using an older version of Prisma ORM, you can use this command by running:

npx prisma@latest debug

Include relevant Prisma ORM info (e.g. the Prisma schema, Prisma Client queries, ...)

To help us reproduce your problem, it is helpful to include your Prisma schema in the bug report. Please remove any database credentials before sharing your Prisma schema in a bug report. If you're sure about which parts of the schema is causing the issue, please strip out the irrelevant parts of it and only show the parts that are related to the problem. If you're not sure, please include your entire schema.

If you have an issue with Prisma Client, please also include which Prisma Client query is causing the issue.