Error message

• Warning: file_put_contents(temporary://fileStookx): failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 1936 of /var/www/vhosts/inachristova.com/httpdocs/includes/file.inc).
• The file could not be created.
• Warning: file_put_contents(temporary://filej1myqn): failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in file_unmanaged_save_data() (line 1936 of /var/www/vhosts/inachristova.com/httpdocs/includes/file.inc).
• The file could not be created.
• Notice: Undefined index: und in include() (line 52 of /var/www/vhosts/inachristova.com/httpdocs/sites/all/themes/illusion/templates/node/projects/node--view--projects-block--block-iosslider.tpl.php).
• Notice: Undefined index: und in include() (line 52 of /var/www/vhosts/inachristova.com/httpdocs/sites/all/themes/illusion/templates/node/projects/node--view--projects-block--block-iosslider.tpl.php).
• Notice: Undefined index: und in include() (line 52 of /var/www/vhosts/inachristova.com/httpdocs/sites/all/themes/illusion/templates/node/projects/node--view--projects-block--block-iosslider.tpl.php).