Error "An exception occurred: json_encode()"

[burnzee]

I'm using xenforo 1.2.1 and having a problem with this error :

An exception occurred: json_encode() [<a href='function.json-encode'>function.json-encode</a>]: Invalid UTF-8 sequence in argument in D:\AP-5MTech\vhost\cfis.edu.vn\httpdocs\library\XenForo\ViewRenderer\Json.php on line 188

XenForo_Application::handlePhpError()
json_encode() in XenForo/ViewRenderer/Json.php at line 188
XenForo_ViewRenderer_Json::jsonEncodeForOutput() in XenForo/ViewRenderer/Json.php at line 104
XenForo_ViewRenderer_Json->renderView() in XenForo/FrontController.php at line 572
XenForo_FrontController->renderView() in XenForo/FrontController.php at line 158
XenForo_FrontController->run() in D:/AP-5MTech/vhost/cfis.edu.vn/httpdocs/index.php at line 13

help me ! please

 

[Jeremy]

Associate your user name with your license for support on these forums.