Erro: SQLSTATE[HY000]: General error: 2013 Lost connection to MySQL server during query

SELECT * FROM tbevento WHERE id = :id_evento AND dt_publicacao < NOW() AND ( flag_expiracao = 'N' OR dt_expiracao > NOW() )

SELECT * FROM tbevento WHERE id = '' AND dt_publicacao < NOW() AND ( flag_expiracao = 'N' OR dt_expiracao > NOW() )

#0 /home/storage/5/4f/7d/liraa/public_html/liraatlaw/class/db/class_db_mysql.php(142): PDOStatement->execute(Array)
#1 /home/storage/5/4f/7d/liraa/public_html/liraatlaw/class/class_evento.php(35): db_mysql->query('SELECT *\n\t\t\t\n\t\t...', Array)
#2 /home/storage/5/4f/7d/liraa/public_html/liraatlaw/paginas/conteudo.php(50): evento->set_dados_evento('')
#3 /home/storage/5/4f/7d/liraa/public_html/liraatlaw/index.php(99): require('/home/storage/5...')
#4 {main}