[Install errors and Mixed Content]

CentOS 7
apache 2.4
nginx 1.20
php 7.4
Revive Adserver 5.4.1

1.

Install errors:

Installation of plugin "reviveMaxMindGeoIP2" failed:
    Server returned: 0
Installation of plugin "openXVideoAds" failed:
    Server returned: 0
Installation of plugin "openXDeliveryLog" failed:
    Server returned: 0
Installation of plugin "openXInvocationTags" failed:
    Server returned: 0
Installation of plugin "openXDeliveryCacheStore" failed:
    Server returned: 0
Installation of plugin "openXReports" failed:
    Server returned: 0
Installation of plugin "openXDeliveryLimitations" failed:
    Server returned: 0
Installation of plugin "openXBannerTypes" failed:

var/install log:

Installation started 2023-04-14 11:33:22
Attempting to connect to database revive_adserver with user revive_adserver
Connected to database revive_adserver
Database settings and permissions are OK
creating upgrade_action audit table
successfully created upgrade_action audit table
creating database_action audit table
successfully created database_action audit table
schema definition from cache TRUE
Installation created the core tables
Installation updated the schema version to 627
Installation updated the application version to 5.4.1
Preparing to set timezone preference...
Found timezone preference ID of 16
Found the admin account's timezone association, updating preference...
Updated the admin account timezone preference to: 'Europe/Moscow'

2.
Mixed Content when accessing Revive Adserver over https.

'proxy_set_header X-Forwarded-Proto $scheme;' in nginx config does not help.