Troubleshooting Application Deployment Errors Caused by `ey-core` Gem


You may experience errors during application deployments due to a specific version of the ey-core gem. Symptoms of this problem include failed deployments and error messages related to the ey-core gem, for example: Unknown cookie parameter: 'samesite'


To resolve this issue, follow these steps:

  1. Update the ey-core gem to the latest version by using the command: gem update ey-core
  2. Remove the old version of ey-core using: gem cleanup ey-core
  3. Install cookiejar from sources with the following commands:
gem install specific_install
gem specific_install -l '' -b master
  1. Redeploy your application using the updated ey-core gem.

This should resolve the errors you are experiencing during application deployments.


Application deployment errors caused by the `ey-core` gem version v3.6.5 can be resolved by updating the gem to the latest version and redeploying the application.


  1. What is the `ey-core` gem?
    The ey-core gem is a Ruby library used in application development and deployment.
  2. How do I update the `ey-core` gem to the latest version?
    You can update the ey-core gem by running the command gem update ey-core in your terminal.
  3. What should I do if I still experience errors after updating the `ey-core` gem?
    If you continue to experience errors after updating the ey-core gem, please contact our support team for further assistance.


  • Avatar
    Tyler Poland

    The "summary" indicates that the deployment errors are caused by gem `v3.6.5`. They are actually caused by `v3.6.4` and following these instructions updates the local gem version to `v3.6.5`; which, as of this comment, is the latest available version.

    This error is not isolated to application deployments, it also happens during the chef cookbook "apply" operation.

    Comment actions Permalink

Article is closed for comments.