« MODx Parse Error »

MODx encountered the following error while attempting to parse the requested resource:
« Execution of a query to the database failed - MySQL server has gone away »
      SQL: SELECT sc.id,sc.pagetitle,sc.longtitle,sc.description,sc.alias,sc.createdby FROM `mirjp`.`modx_site_content` sc LEFT JOIN `mirjp`.`modx_document_groups` dg on dg.document = sc.id WHERE (sc.id=128 ) AND (sc.privateweb=0) LIMIT 1
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Parser timing
  MySQL: 0.8882 s(2 Requests)
  PHP: 0.8852 s 
  Total: 1.7734 s 
Error while inserting event log into database.