# Aiohappyeyeball library failure when deploying machines **URL:** \ **Category:** Python\ **Tags:** login-only\ **Created:** [February 8, 2026, 7:29pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087 "2026-02-08T19:29:55Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![joehelper](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@joehelper](https://community.fly.io/u/joehelper)\ **Post date:** [February 8, 2026, 7:29pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/1 "2026-02-08T19:29:55Z")
I have two machines that run on almost-identical content. One of them fails, out of nowhere, due to this error: > ERROR: Could not find a version that satisfies the requirement aiohappyeyeballs==2.6.1 (from versions: none) > 9.212 ERROR: No matching distribution found for aiohappyeyeballs==2.6.1 The other machine is connected onto the exact same requirements, and doesn’t fail. Has anyone else encountered this issue since the last few days out of the blue ? ---
**Author:** ![lillian](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/lillian/32/49616_2.png) [@lillian](https://community.fly.io/u/lillian)\ **Post date:** [February 8, 2026, 7:43pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/2 "2026-02-08T19:43:03Z")
there is probably some difference in your dockerfile that is causing this, I’d take a look at that. ---
**Author:** ![joehelper](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@joehelper](https://community.fly.io/u/joehelper)\ **Post date:** [February 8, 2026, 7:53pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/3 "2026-02-08T19:53:49Z")
Both of my dockerfiles are identical. Do you know what else could cause this? It started out of nowhere I didn’t make any code changes. ---
**Author:** ![lillian](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/lillian/32/49616_2.png) [@lillian](https://community.fly.io/u/lillian)\ **Post date:** [February 8, 2026, 8:40pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/4 "2026-02-08T20:40:44Z")
hm, I’m not very familiar with python, but it might be a network issue pulling dependencies? I’d look at the rest of your build logs (you can use BUILDKIT\_PROGRESS=plain env var to a fly deploy to view the full log) ---
**Author:** ![joehelper](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@joehelper](https://community.fly.io/u/joehelper)\ **Post date:** [February 9, 2026, 1:42pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/5 "2026-02-09T13:42:54Z")
The same error keeps happening, for two deployments with exactly the same content, but I get this now: > 12.82 ERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host=‘[files.pythonhosted.org](http://files.pythonhosted.org)’, port=443): Max retries exceeded with url: /packages/0f/15/5bf3b99495fb160b63f95972b81750f18f7f4e02ad051373b669d17d44f2/aiohappyeyeballs-2.6.1-py3-none-any.whl (Caused by ProtocolError(‘Connection aborted.’, ConnectionResetError(104, ‘Connection reset by peer’))) ---
**Author:** ![roadmr](https://sea1.discourse-cdn.com/fly1/user_avatar/community.fly.io/roadmr/32/14140_2.png) [@roadmr](https://community.fly.io/u/roadmr)\ **Post date:** [February 9, 2026, 3:22pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/6 "2026-02-09T15:22:55Z")
Hi, can you please retry and let us know if it works now? ---
**Author:** ![joehelper](https://avatars.discourse-cdn.com/v4/letter/j/f9ae1b/32.png) [@joehelper](https://community.fly.io/u/joehelper)\ **Post date:** [February 9, 2026, 4:40pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/7 "2026-02-09T16:40:46Z")
It is now working. Thanks. ---
**Author:** ![system](https://global.discourse-cdn.com/fly1/original/3X/6/e/6e8955d00cb218e186ebbe3a6ab06fefdce15290.svg) [@system](https://community.fly.io/u/system)\ **Post date:** [February 16, 2026, 7:35pm UTC](https://community.fly.io/t/aiohappyeyeball-library-failure-when-deploying-machines/27087/9 "2026-02-16T19:35:11Z")
This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.