XF 1.4 Opening alerts triggers "Invalid UTF-8 sequence" error

[jflory7]

Hello XenForo forums,

I've recently had an issue with my opening my alerts on my site today. Whenever I mouse over the alerts, I am given a stacktrace that is related to this error in my ACP:

Server Error Log


Error Info

ErrorException: json_encode(): Invalid UTF-8 sequence in argument - library/XenForo/ViewRenderer/Json.php:188
Generated By: JWF, 4 minutes ago


Stack Trace

#0 [internal function]: XenForo_Application::handlePhpError(2, 'json_encode(): ...', '/var/www/crysta...', 188, Array)
#1 /var/www/crystalcraftmc.com/public_html/library/XenForo/ViewRenderer/Json.php(188): json_encode(Array)
#2 /var/www/crystalcraftmc.com/public_html/library/XenForo/ViewRenderer/Json.php(104): XenForo_ViewRenderer_Json::jsonEncodeForOutput(Array)
#3 /var/www/crystalcraftmc.com/public_html/library/XenForo/FrontController.php(586): XenForo_ViewRenderer_Json->renderView('XenForo_ViewPub...', Array, 'account_alerts_...', NULL)
#4 /var/www/crystalcraftmc.com/public_html/library/XenForo/FrontController.php(158): XenForo_FrontController->renderView(Object(XenForo_ControllerResponse_View), Object(XenForo_ViewRenderer_Json), Array)
#5 /var/www/crystalcraftmc.com/public_html/index.php(13): XenForo_FrontController->run()
#6 {main}


Request State

array(3) {
  ["url"] => string(169) "http://crystalcraftmc.com/account/alerts-popup?&_xfRequestUri=%2F&_xfNoRedirect=1&_xfToken=1%2C1423484997%2C532e7c477600d0110f1c404fc96617f23904d956&_xfResponseType=json"
  ["_GET"] => array(4) {
    ["_xfRequestUri"] => string(1) "/"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfToken"] => string(53) "1,1423484997,532e7c477600d0110f1c404fc96617f23904d956"
    ["_xfResponseType"] => string(4) "json"
  }
  ["_POST"] => array(0) {
  }
}

I tried using this on the default XenForo theme and my custom styles to no avail — I still get the same result. Can anyone help direct me from where to go from here to figure out this problem? I'm trying to figure out the next step. Thanks!

 

[Mike]

What about if you disable add-ons?

If you go to the full alerts page (<url>/account/alerts), what happens? Is there any weird looking content on the page?

 

[jflory7]

What about if you disable add-ons?

If you go to the full alerts page (<url>/account/alerts), what happens? Is there any weird looking content on the page?

*sighs*

As always seems to be the case, I left my desktop this morning, came home, and found that the alerts seem to be working fine now. I had rebuilt all of the different caches in the ACP right before I left. But now, it seems that it isn't repeatable.

Anyways, for possible future reference, opening the Alerts page worked fine for me even when the pop-up did not. I didn't notice any strange characters or foreign text that could have triggered it.