`Symphony Fatal Database Error: Column 'modification_author_id' cannot be null

UPDATE sym_entries SET `modification_author_id` = null, `modification_date` = '2017-07-28 08:26:28', `modification_date_gmt` = '2017-07-27 20:26:28' WHERE `id` = 33

[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.mysql.php:554]
    MySQL->__error();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.mysql.php:723]
    MySQL->query();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.entrymanager.php:221]
    MySQL->update();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.entry.php:353]
    EntryManager::edit();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/events/class.event.section.php:375]
    Entry->commit();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/events/class.event.section.php:279]
    SectionEvent->__doit();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.event.php:157]
    SectionEvent->execute();
[/Users/phillipgray/Sites/churrosole.co.nz/workspace/events/event.contact.php:84]
    Event->__trigger();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.frontendpage.php:756]
    eventcontact->load();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.frontendpage.php:455]
    FrontendPage->processEvents();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/toolkit/class.frontendpage.php:193]
    FrontendPage->__buildPage();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/core/class.frontend.php:106]
    FrontendPage->generate();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/boot/func.utilities.php:253]
    Frontend->display();
[/Users/phillipgray/Sites/churrosole.co.nz/symphony/lib/boot/func.utilities.php:235]
    symphony_launcher();
[/Users/phillipgray/Sites/churrosole.co.nz/index.php:20]
    symphony();
Database Query Log
[0.0001] SET character_set_connection = 'utf8', character_set_database = 'utf8', character_set_server = 'utf8';
[0.0001] SET CHARACTER SET 'utf8';
[0.0001] SET time_zone = '+12:00';
[0.0008] SELECT SQL_CACHE t1.name, t2.page, t2.delegate, t2.callback FROM `sym_extensions` as t1 INNER JOIN `sym_extensions_delegates` as t2 ON t1.id = t2.extension_id WHERE t1.status = 'enabled' ORDER BY t2.delegate, t1.name;
[0.0003] SELECT SQL_CACHE `session_data` FROM `sym_sessions` WHERE `session` = '10d0b9ef60773727fa369f4baafe635d' LIMIT 1;
[0.0005] SELECT SQL_CACHE a.* FROM `sym_authors` AS `a` WHERE `username` = 'churros_dev' ORDER BY a.id ASC LIMIT 1;
[0.0002] UPDATE sym_authors SET `last_seen` = '2017-07-28 08:26:28' WHERE `id` = 1;
[0.0002] SELECT SQL_CACHE * FROM `sym_pages` WHERE `path` IS NULL AND `handle` = 'contact-us' LIMIT 1;
[0.0003] SELECT SQL_CACHE type FROM `sym_pages_types` AS pt WHERE pt.page_id = 4 GROUP BY pt.type ORDER BY pt.type ASC;
[0.0004] SELECT SQL_CACHE `s`.* FROM `sym_sections` AS `s` WHERE `s`.`id` IN (5);
[0.0003] SELECT SQL_CACHE COUNT(*) AS `count` FROM `sym_fields` WHERE `type` = 'memberrole';
[0.0002] SELECT SQL_CACHE `name` FROM `sym_extensions` WHERE `status` = 'enabled';
[0.0002] SELECT SQL_CACHE `s`.* FROM `sym_sections` AS `s` WHERE `s`.`id` IN (4);
[0.0002] SELECT SQL_CACHE COUNT(*) AS `count` FROM `sym_fields` WHERE `type` = 'memberrole';
[0.0002] SELECT SQL_CACHE * FROM `sym_members_roles` WHERE `id` = 1 ORDER BY `id` ASC LIMIT 1;
[0.0002] SELECT SQL_CACHE `page_id` FROM `sym_members_roles_forbidden_pages` WHERE `role_id` = 1;
[0.0002] SELECT SQL_CACHE * FROM `sym_members_roles_event_permissions` WHERE `role_id` = 1;
[0.0002] SELECT SQL_CACHE `id`, `element_name`, `type`, `location` FROM `sym_fields` WHERE `parent_section` = 4 ORDER BY `sortorder` ASC;
[0.0002] SELECT SQL_CACHE t1.* FROM sym_fields AS `t1` WHERE 1 AND t1.`id` IN(20);
[0.0002] SELECT SQL_CACHE * FROM `sym_fields_input` WHERE `field_id` IN (20);
[0.0002] SELECT SQL_CACHE t1.* FROM sym_fields AS `t1` WHERE 1 AND t1.`id` IN(21);
[0.0002] SELECT SQL_CACHE * FROM `sym_fields_input` WHERE `field_id` IN (21);
[0.0001] SELECT SQL_CACHE t1.* FROM sym_fields AS `t1` WHERE 1 AND t1.`id` IN(22);
[0.0002] SELECT SQL_CACHE * FROM `sym_fields_input` WHERE `field_id` IN (22);
[0.0002] SELECT SQL_CACHE t1.* FROM sym_fields AS `t1` WHERE 1 AND t1.`id` IN(23);
[0.0002] SELECT SQL_CACHE * FROM `sym_fields_textarea` WHERE `field_id` IN (23);
[0.0003] SELECT SQL_CACHE t1.* FROM sym_fields AS `t1` WHERE 1 AND t1.`id` IN(24);
[0.0004] SELECT SQL_CACHE * FROM `sym_fields_date` WHERE `field_id` IN (24);
[0.0004] INSERT INTO `sym_entries` (`section_id`, `modification_date`, `creation_date`, `modification_date_gmt`, `creation_date_gmt`, `author_id`, `modification_author_id`) VALUES ('4', '2017-07-28 08:26:28', '2017-07-28 08:26:28', '2017-07-27 20:26:28', '2017-07-27 20:26:28', '1', '1');
[0.0002] SELECT SQL_CACHE `id`, `element_name`, `type`, `location` FROM `sym_fields` WHERE `parent_section` = 4 ORDER BY `sortorder` ASC;
[0.0003] SELECT SQL_CACHE t1.* FROM sym_fields AS `t1` WHERE 1 AND t1.`parent_section` = '4' ORDER BY t1.`sortorder` ASC;
[0.0002] SELECT SQL_CACHE * FROM `sym_fields_input` WHERE `field_id` IN (20,21,22);
[0.0002] SELECT SQL_CACHE * FROM `sym_fields_textarea` WHERE `field_id` IN (23);
[0.0002] SELECT SQL_CACHE * FROM `sym_fields_date` WHERE `field_id` IN (24);`