I have a module that relies on swiftmailer, and needs the libraries installed. Whenever I've needed to install swiftmailer libraries to a Drupal environment, I've always run this command:

composer require drupal/swiftmailer

This no longer seems to work. Running this now prompts me for authentication to git.drupal.org, and I don't understand why. Apparently this isn't the same as my drupal.org credentials:


I'm not extremely familiar with Composer and am wondering what I can do here.

  • Would be better to paste the terminal output as blockquote into your question instead of attaching it as a screenshot. For readability and searchability.
    – leymannx
    Jul 25, 2018 at 20:49
  • 1
    try composer require 'drupal/swiftmailer:^1.0'
    – No Sssweat
    Jul 26, 2018 at 1:18
  • It looks like it's the coder module that's causing the problem, trying to fetch it from a non-standard repository. Are you using a customised/patched version of that module? Jul 26, 2018 at 9:18
  • 1
    As far as I know I'm not using a custom or patched version. Thanks @NoSssweat, your comment worked for me.
    – saramm1
    Jul 26, 2018 at 12:45
  • Puzzling, but good news you got it sorted. Jul 26, 2018 at 13:32

2 Answers 2


I know you're sorted now, but wanted to suggest that this could be because the repository URL for the coder module is using https.

See here:


The link at the bottom of that article suggests that you can cache your credentials to avoid the need to enter them when using https:


(I would have commented rather than answered, but it seems I don't have enough reputation to comment yet!)


The problem seems to be caused by the server git.drupal.org not responding. Excerpt from the posted composer output:

Could not resolve host: git.drupal.org; Name or service not known

I wonder if the reason it suddenly worked again, might be as simple as the server responding again.

The interesting part of this problem is why drupal/coder is installed/updated at all (when requiring drupal/swiftmailer) ... It's not Swiftmailer that requires Coder. Added: If you used "drupal-composer/drupal-project" as your starting point, Coder is required through webflo/drupal-core-require-dev. The question then becomes, why did Composer update Coder when you just required Swiftmailer? (That is a Composer issue.)

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