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Recently one of my forum users contacted me regarding an issue with updating his signature to this:


Now, when the user clicks "preview" or "submit" he/she gets a page with this error:


Service Temporarily Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

I have reproduced the issue succesfully and I'm unable to find a solution.

I'm also unable to find any error logs generated by mybb? I don't know where to look for them.

MyBB version: 1.8.1 with polish translation pack from: (see footer on my forum)
Clean install of MyBB 1.8, no upgrade/merge or anything.
PHP Version 5.6.2
SQL Engine MySQLi 5.5.37
Server Load 11.5156

How can I fix this issue?
Have you checked your error_log file in your forum directory?
It also could be due to very high server load.
even when users can post, chat, edit posts, and do all other stuff? it always happens when updating the signature to that specific code.

also, there is "no file or directory" named "error_log" in the forum directory or any directories above it (as far as ftp search can do ../../)
Well, try to use it here and you'll see it's not a MyBB issue. Probably your hosting is blocking something, contact them. Or you're using a plugin which causes it.
the only plugin I am using is the dvz shoutbox, could that be causing the issue? how can I debug this if there isn't an error log anywhere Sad
could you create a test user please?
username: tester
pw: fR5%43jw&
(2014-11-13, 09:24 PM)grasmanek94 Wrote: [ -> ]the only plugin I am using is the dvz shoutbox, could that be causing the issue?

Don't think so. As I said, it's most likely caused by hosting. I have similar problems on hostinger - random text getting blocked.
Okay, i logged in to that account and reproduced the bug.

I don't know what is causing that but you can use https links to bypass that error. I think xfire does not allow unsecured image hotlinking.

Just use this code. It updates the signature.

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