# mini.css files seem to be 404 **URL:** \ **Category:** CMS Development\ **Tags:** css\ **Created:** [February 19, 2025, 6:01pm UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411 "2025-02-19T18:01:49Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![TSwisherTOC](https://avatars.discourse-cdn.com/v4/letter/t/90db22/32.png) [@TSwisherTOC](https://community.hubspot.com/u/TSwisherTOC)\ **Post date:** [February 19, 2025, 6:01pm UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411/1 "2025-02-19T18:01:49Z")
All of a sudden our nav and multiple theme modules aren’t working. We only have one custom module and I removed it but that didn’t help. I’ve checked the child theme’s CSS but no issues. We haven’t touched the backend in months so I’m a bit baffled. It seems to me that many min.css files are 404 for some reason. The main theme in previewer looks fine. ![Screenshot 2025-02-19 at 8.55.14 AM.png](https://d2qpr2jzcazej7.cloudfront.net/original/2X/8/8f0d3a8f28d6d7730708e163b2bab5a8952905d5.png) ![Screenshot_1.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/a/5/a59beeac60e1ada3548f4d6881127b22b14b6b94.png) ---
**Author:** ![SteveHTM](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/stevehtm/32/22074_2.png) [@SteveHTM](https://community.hubspot.com/u/SteveHTM)\ **Post date:** [February 19, 2025, 8:35pm UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411/2 "2025-02-19T20:35:14Z")
@TSwisherTOC - this is a bit of a random guess. Based on a problem I had a while back, the ‘minifier’ or whatever it might be called can detect syntax issues in the CSS and refuse to generate a .min file. I coul donly find this issue by running my files through a 3rd party syntax checker. Why this should happen spontaneously is of course a separate question! Good luck! Steve ---
**Author:** ![TSwisherTOC](https://avatars.discourse-cdn.com/v4/letter/t/90db22/32.png) [@TSwisherTOC](https://community.hubspot.com/u/TSwisherTOC)\ **Post date:** [February 19, 2025, 9:04pm UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411/3 "2025-02-19T21:04:06Z")
Thank you for the reponse. I have run all my custom css through VS code I will check the theme but I doubt the theme is an issue since the theme preview looks fine. I will double check though and thanks again. Thomas ---
**Author:** ![GiantFocal](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/giantfocal/32/41969_2.png) [@GiantFocal](https://community.hubspot.com/u/GiantFocal)\ **Post date:** [February 20, 2025, 12:48am UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411/4 "2025-02-20T00:48:23Z")
Hi @TSwisherTOC, Recheck each of your CSS files for any errors. If no errors, then re-publish the files for HubSpot to re-run their minifier. ---
**Author:** ![TSwisherTOC](https://avatars.discourse-cdn.com/v4/letter/t/90db22/32.png) [@TSwisherTOC](https://community.hubspot.com/u/TSwisherTOC)\ **Post date:** [February 20, 2025, 9:16pm UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411/5 "2025-02-20T21:16:17Z")
Thanks. I only have but a few in my child theme. I tried that but it doesn’t seem to have any effect. Very frustrating. ---
**Author:** ![Berangere](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/berangere/32/220784_2.png) [@Berangere](https://community.hubspot.com/u/Berangere)\ **Post date:** [February 21, 2025, 8:36am UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411/6 "2025-02-21T08:36:24Z")
Hi @TSwisherTOC, Thank you for reaching out to the Community! And thanks @SteveHTM and @GiantFocal for your help! ❤ I am sorry to hear about your experience with the mini.css files @TSwisherTOC. I understand how this can be frustrating. I’d love to put you in touch with other Community Champions to see if there are other options that you can try: Hi @Anton, @stefen and [@sylvain\_tirreau](https://community.hubspot.com/t5/user/viewprofilepage/user-id/601366) do you have other suggestions to help @TSwisherTOC, please? Have a great weekend and thanks so much! Best, Bérangère ---
**Author:** ![TSwisherTOC](https://avatars.discourse-cdn.com/v4/letter/t/90db22/32.png) [@TSwisherTOC](https://community.hubspot.com/u/TSwisherTOC)\ **Post date:** [February 21, 2025, 1:54pm UTC](https://community.hubspot.com/t/mini-css-files-seem-to-be-404/126411/7 "2025-02-21T13:54:18Z")
Wanted to first say thanks for everyone that responded. I like both of the responses above the problem is the are modules in the theme so I can’t make changes. That got me thinking though how about moving them to the child theme make a change and save. Sure enough that fixed the issue. Funny thing though once and awhile on reload I get this in console log. This doesn’t seem to be affecting anything but it is annoying. ![Screenshot 2025-02-21 at 6.48.12 AM.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/4/1/416e25fd8fd24a6eba299adfc1231b2b10b5e072.png)