Follow the procedure outlined here when reporting issues with the LoopBack project.
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Before asking a question on GitHub

If you have a question about how to do something in LoopBack, follow these steps:

  1. Consult the documentation and the API documentation. NOTE: The search box above searches both of these sites.
  2. If you don’t find an answer to your question, then do one of the following:

    Posting to Google Group or StackOverflow is preferred so others may benefit from the answer.

  3. If the above two ways do not work, open a GitHub issue on the corresponding LoopBack repo, providing as much information as possible, for example, versions and use case scenarios for features.

How to report an issue

To report an issue:

  1. Search existing issues in loopback and loopback-next. It’s possible someone has already reported the same problem.
  2. Make sure you have a GitHub account.
  3. Create a new issue, following the steps outlined below

Determine the issue type

There are four types of issues:

Report in appropriate channel

We support multiple channels for specific purposes. Please choose the SINGLE most appropriate channel to report your issue to.

Security issues

We take security vulnerabilities in LoopBack very seriously for our users.

In production, do not enable debug logs that may contain sensitive data; for example, the payload of PersistedModel.create should not be exposed in production. Logging this type of information is acceptable in development, but not in production.

Do not report security vulnerabilities using GitHub issues. Please send an email to with:

  • Description of the vulnerability.
  • Steps to reproduce the issue.
  • Possible solutions.

Feature request

To report a feature request for LoopBack 4.x (and newer), open a new GitHub issue at

For feature/enhancement requests related to specific LoopBack modules maintained outside of loopback-next monorepo (e.g. loopback-connector-mysql), please create an issue in the repository itself (e.g.

Bug report

Key information to include

When reporting bugs, please include at least all the following:

  • Operating system version.
  • Node.js version.
  • Pertinent version of Node modules, for example LoopBack.
  • Any stack trace, error message text, or other relevant information.

Consider using the Node.js Diagnostic Report utility to gather and report the relevant information.

LoopBack 4.x bugs

To report a bug in LoopBack version 4.x or newer:

  1. Fork loopback-next monorepo.

  2. Create a new feature branch, e.g. git checkout -b my-issue

  3. Pick one of the projects in examples directory as a starting point for your application reproducing the problem. The Todo example should work well for most users.

  4. Modify the selected example project to reproduce the issue you are experiencing. Add the required code and configuration. When adding new dependencies, don’t forget to save them to package.json too.

  5. If possible, encode steps to reproduce in an automated test we can run via npm test.

  6. Commit the changes (git commit) and push the feature branch to GitHub (git push -u origin my-branch-name)

  7. Create an issue in the appropriate GitHub repository (see Report in appropriate channel). Provide clear steps to reproduce in the issue description AND a link to the forked repository. Please include the name of your feature branch in the link, e.g.

LoopBack 3.x bugs

To report a bug in LoopBack version 2.x or 3.x:

  1. Fork loopback-sandbox.
  2. Add the code required to reproduce your issue in the forked repository.
  3. Create an issue in the appropriate repository with steps to reproduce in the issue description AND a link to the forked repository.

From this point, we will clone the the forked repository and try to reproduce the issue. Once verified, we will respond to you and prioritize the fix accordingly.

We recommend forking loopback-sandbox to leverage community support in reproducing issues. By doing this, we can focus on fixing and responding to the actual issues.

For bug reports related to specific LoopBack dependencies (for example, loopback-connector-mysql), please create an issue in the repository itself; for example, loopback-connector-mysql.

Wait for response

We actively monitor the officially supported channels and generally respond as soon as possible. If you haven’t received a response from us within two business days, please remind us on Google Groups or ping us on Gitter.

We also encourage community participation with regards to resolving issues. If you know the answer to any issues you encounter, please chime in and help each other out. We will also try our best to help users who are actively helping other users.