XF 2.2 One thread is getting oops error - Preflight response is not successful - XMLHttpRequest cannot load ...due to access control checks

Mr Lucky

Mr Lucky

Well-known member
Licensed customer
Page gets an Oops! We ran into some problems. Please try again later. More error details may be in the browser console. whenever clicking on contact form in footer, login/out, notifications, style chooser, post edit etc.

[Error] Preflight response is not successful. Status code: 400
[Error] XMLHttpRequest cannot load https://cafesaxophone.com/login/ due to access control checks.
[Error] Failed to load resource: Preflight response is not successful. Status code: 400 (login, line 0)

This is the page:

cafesaxophone.com

Saxophones - Very Vintage Rampone tenor.

Did a service on this very old Rampone tenor the other day, and as it's quite an interesting horn I thought I'd run up a review on it. But I have no idea of its history - and neither does the client. Anyone got any pointers? The serial number is in the 60XX range.
cafesaxophone.com cafesaxophone.com
I've tried default style, disabling addons, different browsers, logging out (but can't on that page!) Console shows error but I have no idea what it's about.

Can anyone please help!

Thanks
 
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What I see when looking at the access logs, is that any overlay that would be generated is generating a 301 redirect, and that's why it's not being loaded (when viewed as logged in and as a guest).

All other parts of the site load the overlay correctly.
 
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Fixed it:

caused by this in .htaccess

Code: 
# if the query has amp it removes it
RewriteCond %{QUERY_STRING} amp
RewriteRule (.*) https://cafesaxophone.com/$1? [R=301,L]
 
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