IP 1.5.7 installation problem

Installed IP1.5.7 in the root of https://invoice.dutchmedicaldevices.com

During installation I go in a endless loop from language selection to prerequisites (all ok), sometimes it poppes out which enables me to fill in the database credentials and get message back that database is configured correctly. IPCONFIG.PHP looks then like:

<?php exit('No direct script access allowed'); ?>
# InvoicePlane Configuration File

### START HERE
# Set your URL without trailing slash here, e.g. http://your-domain.com
IP_URL=https://invoice.dutchmedicaldevices.com

# Having problems? Enable debug by changing the value to 'true' to enable advanced logging
ENABLE_DEBUG=true

# Set this setting to 'true' if you want to disable the setup for security purposes
DISABLE_SETUP=false

# To remove index.php from the URL, set this setting to 'true'.
# Please notice the additional instructions in the htaccess file!
REMOVE_INDEXPHP=false

# These database settings are set during the initial setup
DB_HOSTNAME=sql1.pcextreme.nl
DB_USERNAME=78404invoice
DB_PASSWORD=REMOVED
DB_DATABASE=78404invoice
DB_PORT=3306

# If you want to be logged out after closing your browser window, set this setting to 0 (ZERO).
# The number represents the amount of minutes after that IP will automatically log out users,
# the default is 10 days.
SESS_EXPIRATION=864000

# Enable the deletion of invoices
ENABLE_INVOICE_DELETION=false

# Disable the read-only mode for invoices
DISABLE_READ_ONLY=false

##
## DO NOT CHANGE ANY CONFIGURATION VALUES BELOW THIS LINE!
## =======================================================
##

# This key is automatically set after the first setup. Do not change it manually!
ENCRYPTION_KEY=
ENCRYPTION_CIPHER=AES-256

# Set to true after the initial setup
SETUP_COMPLETED=false

Manually changed debug=true

When I press ok I get the language selection screen again, but never make it to a next step. I have installed IP before and use is daily.

(Part of) the error log:

DEBUG - 2018-02-20 10:17:55 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/setup/models/Mdl_setup.php
DEBUG - 2018-02-20 10:17:55 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/controllers/../modules/layout/controllers/Layout.php
DEBUG - 2018-02-20 10:17:55 --> Layout MX_Controller Initialized
DEBUG - 2018-02-20 10:17:55 --> UTF-8 Support Enabled
DEBUG - 2018-02-20 10:17:55 --> Global POST, GET and COOKIE data sanitized
DEBUG - 2018-02-20 10:17:55 --> Setup MX_Controller Initialized
DEBUG - 2018-02-20 10:17:55 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/setup/models/Mdl_setup.php
DEBUG - 2018-02-20 10:17:55 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/controllers/../modules/layout/controllers/Layout.php
DEBUG - 2018-02-20 10:17:55 --> Layout MX_Controller Initialized
DEBUG - 2018-02-20 10:17:55 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/setup/views/language.php
DEBUG - 2018-02-20 10:17:55 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/layout/views/setup.php
DEBUG - 2018-02-20 10:17:55 --> Total execution time: 0.0451
DEBUG - 2018-02-20 10:17:56 --> UTF-8 Support Enabled
DEBUG - 2018-02-20 10:17:56 --> Global POST, GET and COOKIE data sanitized
DEBUG - 2018-02-20 10:17:56 --> Setup MX_Controller Initialized
DEBUG - 2018-02-20 10:17:56 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/setup/models/Mdl_setup.php
DEBUG - 2018-02-20 10:17:56 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/controllers/../modules/layout/controllers/Layout.php
DEBUG - 2018-02-20 10:17:56 --> Layout MX_Controller Initialized
DEBUG - 2018-02-20 10:17:56 --> UTF-8 Support Enabled
DEBUG - 2018-02-20 10:17:56 --> Global POST, GET and COOKIE data sanitized
DEBUG - 2018-02-20 10:17:56 --> Setup MX_Controller Initialized
DEBUG - 2018-02-20 10:17:56 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/setup/models/Mdl_setup.php
DEBUG - 2018-02-20 10:17:56 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/controllers/../modules/layout/controllers/Layout.php
DEBUG - 2018-02-20 10:17:56 --> Layout MX_Controller Initialized
DEBUG - 2018-02-20 10:17:56 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/setup/views/prerequisites.php
DEBUG - 2018-02-20 10:17:56 --> File loaded: /home/vhosting/o/vhost0078404/domains/dutchmedicaldevices.com/htdocs/invoice/application/modules/layout/views/setup.php
DEBUG - 2018-02-20 10:17:56 --> Total execution time: 0.0460

Run PHP7.2 Apache 2.4 MySQL 5.5.5

Can you help / know what is not going ritght?

Regards,
Coen