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Partial fix 500 error trying to reply to the UI.X thread?

Jake B.

Well-known member
It seems that I'm for some reason getting an error when trying to post a reply to the UI.X thread


Console shows this:

POST https://xenforo.com/community/threads/ui-x-paid-responsive-feature-packed-extendable-theme-framework.57944/add-reply 500 (Internal Server Error)n.ajaxTransport.send @ jquery.min.js:4n.extend.ajax @ jquery.min.js:4c.extend.ajax @ xenforo.js?_v=d2e643aa:226XenForo.AutoValidator.ajaxSave @ xenforo.js?_v=d2e643aa:339jQuery.extend.context @ xenforo.js?_v=d2e643aa:195n.event.dispatch @ jquery.min.js:3n.event.add.r.handle @ jquery.min.js:3
So I tried making a test thread in the 'testing' area, and made a reply to it and it worked fine, but am still unable to post in the UI.X thread, which is... odd.


XenForo moderator
Staff member
Seems fine for me.

What was the specific content you were trying to post?

I can see some errors in the ACP log which may be relevant.

It looks to be related to the new auto link URL function.

Jake B.

Well-known member
Well, I just tried to paste it here and it didn't work, which is odd. I think I have an idea.

We're currently using it instead of floats for the extended footer, and any sort of tabs that would be in the sidebar (mainly the ones that WidgetFramework creates if you put two widgets in the same group) to make them look nicer.

These resources can probably explain better than I can :)

A Visual Guide to CSS3 Flexbox Properties


Well-known member
Yes, I can reproduce the issue when trying to post this:



XenForo developer
Staff member
I've prevented this error, but because of the specifics of the situation, it won't be converted to a title. It's actually down to the server specifically ignoring a header that we send which leads to the page body not being fully readable.