I succeed to install with a lower version of PHP. I think there is an issue with one version of PHP. Please find below the 2 environments tested. If you can have a look for php7.2 / MySQL 5.7
*** On this environment it FAILS ***
== Server Environment ==
Operating System: Linux
Software: Apache/2.4.7 (Ubuntu)
MySQL version: (Ubuntu) v5.5.46
PHP Version: 5.5.9-1ubuntu4.20
PHP Max Input Vars: 1000
PHP Max Post Size: 8M
GD Installed: Yes
ZIP Installed: Yes
Write Permissions: All right
Elementor Library: Connected
== WordPress Environment ==
Version: 4.9.10
Site URL: http://212.47.247.107/wordpress
Home URL: http://212.47.247.107/wordpress
WP Multisite: No
Max Upload Size: 8 MB
Memory limit: 256M
Permalink Structure: Plain
Language: en-US
Timezone: 0
Debug Mode: Inactive
== Theme ==
Name: Zakra
Version: 1.2.3
Author: ThemeGrill
Child Theme: No
== User ==
Role: administrator
WP Profile lang: en_US
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36
== Active Plugins ==
Elementor
Version: 2.6.7
Author: Elementor.com
Everest Forms
Version: 1.5.3
Author: WPEverest
Mailchimp for WordPress
Version: 4.5.3
Author: ibericode
ThemeGrill Demo Importer
Version: 1.5.9
Author: ThemeGrill
WooCommerce
Version: 3.6.5
Author: Automattic
*** On this environment it FAILS ***
== Server Environment ==
Operating System: Linux
Software: nginx/1.14.0
MySQL version: (Ubuntu) v5.7.27
PHP Version: 7.2.19-0ubuntu0.18.04.1
PHP Max Input Vars: 1000
PHP Max Post Size: 100M
GD Installed: No
ZIP Installed: No
Write Permissions: All right
Elementor Library: Connected
== WordPress Environment ==
Version: 5.2.2
Site URL: http://163.172.143.185/wp2
Home URL: http://163.172.143.185/wp2
WP Multisite: No
Max Upload Size: 100 MB
Memory limit: 1024M
Permalink Structure: Plain
Language: en-US
Timezone: 0
Debug Mode: Inactive
== Theme ==
Name: Zakra
Version: 1.2.3
Author: ThemeGrill
Child Theme: No
== User ==
Role: administrator
WP Profile lang: en_US
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36
== Active Plugins ==
Elementor
Version: 2.6.7
Author: Elementor.com
Everest Forms
Version: 1.5.3
Author: WPEverest
Mailchimp for WordPress
Version: 4.5.3
Author: ibericode
ThemeGrill Demo Importer
Version: 1.5.9
Author: ThemeGrill
WooCommerce
Version: 3.6.5
Author: Automattic