Internal Server Error

array_merge(): Expected parameter 2 to be an array, null given

[cms/framework/f3/base.php:2261] Base->error()
[plugins/frontpage/base.php:148] array_merge()
[cms/framework/pagetypes/plugin.php:45] Plugins\Frontpage\Base->show()
[cms/models/pages.php:229] PageTypes\Plugin::render()
[cms/controllers/frontend.php:59] Models\Pages->render()
[cms/framework/f3/base.php:1873] Controllers\Frontend->index()
[cms/framework/f3/base.php:1673] Base->call()
[cms/app.php:24] Base->run()
[index.php:16] App->run()

DB LOG

(0.9ms) SHOW columns FROM `Sql1372003_4`.`config`
(0.3ms) SELECT `name`, `content` FROM `config` WHERE `enabled`=1 ORDER BY `id` ASC
(0.8ms) SHOW columns FROM `Sql1372003_4`.`session`
(1.0ms) SHOW columns FROM `Sql1372003_4`.`pages`
(0.7ms) SELECT `id`,`name`,`type`,`template`,`target`,`status`,`datasource`,`icon`,`created`,`parent`,`seo_url`,`seo_title`,`seo_desc`,`seo_keywords`,`seo_robots`,`locked_by`,`locked_time`,`ordering`,`readonly`,`homepage`,`menu`,`enabled`,`hide` FROM `pages` WHERE `enabled`=1 AND `id`=7
(0.9ms) SHOW columns FROM `Sql1372003_4`.`models`
(1.5ms) SELECT `id`,`name`,`type`,`permissions_type`,`seo`,`created`,`locked_by`,`locked_time`,`ordering`,`readonly`,`enabled`,`hide` FROM `models` WHERE `id`='1'
(1.0ms) SHOW columns FROM `Sql1372003_4`.`model_1`
(1.3ms) SHOW columns FROM `Sql1372003_4`.`models_items`
(0.8ms) SELECT `id`,`name`,`field`,`alias`,`type`,`datasource`,`tooltip`,`created`,`locked_by`,`locked_time`,`ordering`,`readonly`,`required`,`search`,`hide`,`model`,`enabled` FROM `models_items` WHERE `model`=1 AND `enabled`=1 ORDER BY `ordering` ASC
(0.9ms) SELECT `id`,`created`,`parent`,`status`,`author`,`published_start`,`published_end`,`seo_url`,`seo_title`,`seo_desc`,`seo_keywords`,`seo_robots`,`locked_by`,`locked_time`,`ordering`,`readonly`,`required`,`enabled`,`trashed`,`item_1`,`item_2`,`item_3_file`,`item_3` FROM `model_1` WHERE `id` = 26 AND `enabled` = 1 AND `trashed` = 0