2013 - Lost connection to MySQL server during query

select count(*) as count from whos_online where session_id = '5e788d24ea000359e32082a0d5b11e8a'

[XT SQL Error]

2006 - MySQL server has gone away

select count(*) as total from sessions where sesskey = '5e788d24ea000359e32082a0d5b11e8a'

[XT SQL Error]