Revolution 2.6.1
mysql 5.6.39-83.1
php 7.0.24
Hello, in the logs I found the error

Help me fix it, please!
[2018-04-20 08:34:20] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 08:47:06] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 08:48:31] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:16:18] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:17:18] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:27:33] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:29:57] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:35:18] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:35:37] (ERROR @ .../xpdo/om/xpdoobject.class.php : 240) Error HY000 executing statement:
Array
(
[0] => HY000
[1] => 2014
[2] => Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.
)
[2018-04-20 09:35:37] (ERROR @ .../xpdo/om/xpdoobject.class.php : 1452) Error HY000 executing statement:
INSERT INTO `modx_c19z7kxx3r_session` (`id`, `access`, `data`) VALUES ('ijk047qt5hgtgtd8b2fires253', 1524206137, 'modx.user.0.resourceGroups|a:1:{s:4:\"yolo\";a:0:{}}modx.user.0.attributes|a:1:{s:4:\"yolo\";a:5:{s:16:\"modAccessContext\";a:2:{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:4:\"yolo\";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:18:\"modAccessNamespace\";a:0:{}}}')
Array
(
[0] => HY000
[1] => 2014
[2] => Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.
)
[2018-04-20 09:35:37] (ERROR @ Unknown0) PHP warning: Unknown: Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/tmp/u0435815)
[2018-04-20 09:50:27] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:54:14] (ERROR @ .../components/getyoutube/model/getyoutube/search.class.php : 178) PHP warning: implode(): Invalid arguments passed
[2018-04-20 09:59:18] (ERROR @ .../xpdo/om/xpdoobject.class.php : 240) Error HY000 executing statement:
Array
(
[0] => HY000
[1] => 2014
[2] => Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.
)
[2018-04-20 09:59:18] (ERROR @ .../xpdo/om/xpdoobject.class.php : 1452) Error HY000 executing statement:
INSERT INTO `modx_c19z7kxx3r_session` (`id`, `access`, `data`) VALUES ('2trtq6cslvisqktcro3rg7t824', 1524207558, 'modx.user.0.resourceGroups|a:1:{s:4:\"yolo\";a:0:{}}modx.user.0.attributes|a:1:{s:4:\"yolo\";a:5:{s:16:\"modAccessContext\";a:2:{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:4:\"yolo\";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:18:\"modAccessNamespace\";a:0:{}}}')
Array
(
[0] => HY000
[1] => 2014
[2] => Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.
)
[2018-04-20 09:59:18] (ERROR @ Unknown0) PHP warning: Unknown: Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/tmp/u0435815)