QueryException not captured

Message:
MySQL server has gone away
Error code: 2006
Query:
SELECT R.* 
,U.user_fname
,U.user_lname
,U.user_username
,U.user_avatar
,UNIX_TIMESTAMP(R.answer_posted) posted
,R.answer_votes_neg-R.answer_votes_pos vtotal
FROM (rs_answers R
LEFT JOIN usuarios U ON R.user_id=U.user_id)
LEFT JOIN rs_questions q ON q.rs_question_id=R.rs_question_id
WHERE 1=1
AND R.answer_locked=0
AND R.rs_question_id=708
AND R.answer_seleccionada=0
AND q.rs_question_type=1
ORDER BY answer_posted DESC

		
File: /usr/local/www/common/packages/system/db/mysql/MySQLConnection.php

Line: 162

Stack trace:
#0 /usr/local/www/common/packages/qhago/Questions.php(406): MySQLConnection->executeQuery('SELECT R.* ????...')
#1 /usr/local/www/qhago.com/public_html/functions/views.php(835): Questions::getAnswers(-1, 'answer_posted', 'DESC', '', '708', 0, '', 0, false, 1)
#2 /usr/local/www/qhago.com/public_html/modules/responder/verRespuestas.php(40): viiewComment('708', 1)
#3 /usr/local/www/qhago.com/public_html/modules/responder/index.php(23): require_once('/usr/local/www/...')
#4 /usr/local/www/qhago.com/public_html/index.php(195): require_once('/usr/local/www/...')
#5 {main}