Error message

• Notice: Trying to access array offset on value of type int in element_children() (line 6591 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6591 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6591 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6591 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6591 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6591 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Notice: Trying to access array offset on value of type int in element_children() (line 6591 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 14 of /var/www/vhosts/gerson.gr/httpdocs/themes/engines/phptemplate/phptemplate.engine).
• Warning: is_dir(): open_basedir restriction in effect. File(/libraries) is not within the allowed path(s): (/var/www/vhosts/gerson.gr/:/tmp/) in libraries_get_libraries() (line 92 of /var/www/vhosts/gerson.gr/httpdocs/sites/all/modules/libraries/libraries.module).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /var/www/vhosts/gerson.gr/httpdocs/includes/common.inc).
• Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in menu_set_active_trail() (line 2405 of /var/www/vhosts/gerson.gr/httpdocs/includes/menu.inc).