Revo 2.2.6: phpthumb (?) вешает базу

[2016-08-05 14:12:15] (ERROR @ /connectors/system/phpthumb.php) Error HY000 executing statement:
INSERT INTO `modx_session` (`id`, `access`, `data`) VALUES ('97f9e25e7ef4163a0350f0ab2588fa0b', 1470395535, 'modx.user.contextTokens|a:1:{s:3:\"mgr\";i:1;}modx.user.0.resourceGroups|a:1:{s:2:\"en\";a:0:{}}modx.user.0.attributes|a:2:{s:3:\"web\";a:4:{s:16:\"modAccessContext\";a:2:{s:2:\"en\";a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}s:3:\"web\";a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}}s:22:\"modAccessResourceGroup\";a:0:{}s:17:\"modAccessCategory\";a:0:{}s:28:\"sources.modAccessMediaSource\";a:0:{}}s:2:\"en\";a:4:{s:16:\"modAccessContext\";a:2:{s:2:\"en\";a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}s:3:\"web\";a:1:{i:0;a:3:{s:9:\"principal\";i:0;s:9:\"authority\";s:1:\"0\";s:6:\"policy\";a:1:{s:4:\"load\";b:1;}}}}s:22:\"modAccessResourceGroup\";a:0:{}s:17:\"modAccessCategory\";a:0:{}s:28:\"sources.modAccessMediaSource\";a:0:{}}}modx.mgr.user.token|s:52:\"modx51e395a2e874a0.68325019_157a455f0e5e402.12754738\";modx.mgr.session.cookie.lifetime|i:0;newResourceTokens|a:9:{i:0;s:23:\"57a45605303268.73320106\";i:1;s:23:\"57a45647075cd2.53942007\";i:2;s:23:\"57a4572b34eb84.80242165\";i:3;s:23:\"57a457632fac85.80275760\";i:4;s:23:\"57a457880c8df7.94228266\";i:5;s:23:\"57a464c004ef80.59389389\";i:6;s:23:\"57a4650dd3ba15.22377956\";i:7;s:23:\"57a465b4855aa1.52489304\";i:8;s:23:\"57a4665ae8f112.50260657\";}modx.user.1.userGroups|a:1:{i:0;i:1;}')
Array
(
    [0] => HY000
    [1] => 2006
    [2] => MySQL server has gone away
)