The preview not loading

When creating a new page and I try to edit it with elementor, I get error message – preview not loaded. All suggested method tried, no success. It is possible to edit home page but no new page (contact, about me,….).
Active plugin Elementor, Ocean Extra, Ocean Modal Window, Ocean Posts Slider, Ocean Social Sharing.
Anyone knows where the problem is?

== Server Environment ==
Operating System: Linux
Software: nginx/1.9.9
MySQL version: 5.5.5
PHP Version: 5.6.30-0+deb8u1
PHP Max Input Vars: 1000
PHP Max Post Size: 2500M
GD Installed: Yes
Write Permissions: There are some writing permissions issues with the following directories/files:
– WordPress root directory
– .htaccess file
Elementor Library: Connected

== WordPress Environment ==
Version: 4.9.2
Site URL: http://harmonio.cz
Home URL: http://harmonio.cz
WP Multisite: No
Max Upload Size: 2 GB
Memory limit: 256M
Permalink Structure: /%postname%/
Language: cs-CZ
Timezone: Europe/Prague
Debug Mode: Inactive

== Theme ==
Name: OceanWP
Version: 1.4.15
Author: Nick
Child Theme: No

== User ==
Role: administrator
WP Profile lang: cs_CZ
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

== Active Plugins ==
Elementor
Version: 1.9.3
Author: Elementor.com

Ocean Extra
Version: 1.4.3
Author: OceanWP

Ocean Modal Window
Version: 1.0.12
Author: OceanWP

Ocean Posts Slider
Version: 1.0.9
Author: OceanWP

Ocean Social Sharing
Version: 1.0.9
Author: OceanWP

== Debug ==
Errors:
TypeError: Cannot read property ‘nodeType’ of undefined
at http://harmonio.cz/wp-admin/load-scripts.php?c=1&load%5B%5D=mce-view,imgareaselect,image-edit,jquery-ui-resizable,jquery-ui-draggable,quicktags,wplink,jquery-ui-position,jquery-ui-menu,jqu&load%5B%5D=ery-ui-autocomplete,thickbox,media-upload,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,heartbeat,wp-auth-check,image&load%5B%5D=sloaded&ver=4.9.2 – 38:308
2018-02-09 10:48 +00:00

TypeError: Cannot read property ‘currentView’ of undefined
at http://harmonio.cz/wp-content/plugins/elementor/assets/js/editor.min.js?ver=1.9.3 – 2:71952
2018-02-09 10:46 +00:00

TypeError: Cannot read property ‘nodeType’ of undefined
at http://harmonio.cz/wp-admin/load-scripts.php?c=1&load%5B%5D=mce-view,imgareaselect,image-edit,jquery-ui-resizable,jquery-ui-draggable,quicktags,wplink,jquery-ui-position,jquery-ui-menu,jqu&load%5B%5D=ery-ui-autocomplete,thickbox,media-upload,jquery-ui-slider,jquery-touch-punch,iris,wp-color-picker,heartbeat,wp-auth-check,image&load%5B%5D=sloaded&ver=4.9.2 – 38:308
2018-02-09 10:46 +00:00

The page I need help with: [log in to see the link]