XF 1.1 Unknown error

[Rho Delta]

I got this error when opening a thread on one of my sites... Please help!

An exception occurred: Mysqli prepare error: MySQL server has gone away in /public_html/library/Zend/Db/Statement/Mysqli.php on line 77

1. Zend_Db_Statement_Mysqli->_prepare() in Zend/Db/Statement.php at line 115
2. Zend_Db_Statement->__construct() in Zend/Db/Adapter/Mysqli.php at line 381
3. Zend_Db_Adapter_Mysqli->prepare() in Zend/Db/Adapter/Abstract.php at line 478
4. Zend_Db_Adapter_Abstract->query() in Zend/Db/Adapter/Abstract.php at line 825
5. Zend_Db_Adapter_Abstract->fetchOne() in XenForo/Error.php at line 48
6. XenForo_Error::unexpectedException() in XenForo/Application.php at line 309
7. XenForo_Application::handleException()

 

[Jeremy]

MySQL server has gone away

The error tells you what is wrong. Contact your host or restart your MySQL server.