here is the requested log output, level debug
D, [2018-10-17T09:33:52.355275 ] DEBUG -- : 'dynflow' settings: 'core_url': https://proxy1.nts.at:8008, 'database': , 'enabled': https
D, [2018-10-17T09:33:52.356103 ] DEBUG -- : 'dynflow' ports: 'http': false, 'https': true
D, [2018-10-17T09:33:52.362192 ] DEBUG -- : 'ansible' settings: 'ansible_working_dir': ~/.foreman-ansible, 'enabled': true
D, [2018-10-17T09:33:52.363585 ] DEBUG -- : 'ansible' ports: 'http': true, 'https': true
D, [2018-10-17T09:33:52.375765 ] DEBUG -- : 'tftp' settings: 'enabled': https, 'tftp_connect_timeout': 10 (default), 'tftp_dns_timeout': 10 (default), 'tftp_read_timeout': 60 (default), 'tftproot': /var/lib/tftpboot (default)
D, [2018-10-17T09:33:52.376940 ] DEBUG -- : 'tftp' ports: 'http': false, 'https': true
D, [2018-10-17T09:33:52.387228 ] DEBUG -- : 'puppetca' settings: 'enabled': https, 'ssldir': /etc/puppetlabs/puppet/ssl, 'use_provider': puppetca_hostname_whitelisting (default)
D, [2018-10-17T09:33:52.388583 ] DEBUG -- : 'puppetca' ports: 'http': false, 'https': true
D, [2018-10-17T09:33:52.426086 ] DEBUG -- : 'puppet' settings: 'enabled': https, 'puppet_version': 5.5.6, 'use_provider': [:puppet_proxy_puppet_api]
D, [2018-10-17T09:33:52.427505 ] DEBUG -- : 'puppet' ports: 'http': false, 'https': true
D, [2018-10-17T09:33:52.435311 ] DEBUG -- : 'logs' settings: 'enabled': https
D, [2018-10-17T09:33:52.435920 ] DEBUG -- : 'logs' ports: 'http': false, 'https': true
D, [2018-10-17T09:33:52.437311 ] DEBUG -- : Providers ['puppetca_hostname_whitelisting'] are going to be configured for 'puppetca'
D, [2018-10-17T09:33:52.438685 ] DEBUG -- : Providers ['puppet_proxy_puppet_api'] are going to be configured for 'puppet'
D, [2018-10-17T09:33:52.447841 ] DEBUG -- : 'puppetca_hostname_whitelisting' settings: 'autosignfile': /etc/puppetlabs/puppet/autosign.conf, 'ssldir': /etc/puppetlabs/puppet/ssl, 'use_provider': puppetca_hostname_whitelisting
D, [2018-10-17T09:33:52.459720 ] DEBUG -- : 'puppet_proxy_puppet_api' settings: 'api_timeout': 30 (default), 'classes_retriever': apiv3, 'environments_retriever': apiv3, 'puppet_ssl_ca': /etc/puppetlabs/puppet/ssl/certs/ca.pem, 'puppet_ssl_cert': /etc/puppetlabs/puppet/ssl/certs/proxy1.nts.at.pem, 'puppet_ssl_key': /etc/puppetlabs/puppet/ssl/private_keys/proxy1.nts.at.pem, 'puppet_url': https://proxy1.nts.at:8140, 'puppet_version': 5.5.6, 'use_provider': [:puppet_proxy_puppet_api]
I, [2018-10-17T09:33:52.463464 ] INFO -- : Successfully initialized 'dynflow'
I, [2018-10-17T09:33:52.490189 ] INFO -- : Successfully initialized 'ansible'
I, [2018-10-17T09:33:52.490694 ] INFO -- : Successfully initialized 'foreman_proxy'
I, [2018-10-17T09:33:52.491191 ] INFO -- : Successfully initialized 'tftp'
I, [2018-10-17T09:33:52.491680 ] INFO -- : Successfully initialized 'puppetca_hostname_whitelisting'
I, [2018-10-17T09:33:52.492204 ] INFO -- : Successfully initialized 'puppetca'
I, [2018-10-17T09:33:52.492756 ] INFO -- : Started puppet class cache initialization
I, [2018-10-17T09:33:52.493665 ] INFO -- : Successfully initialized 'puppet_proxy_puppet_api'
I, [2018-10-17T09:33:52.494141 ] INFO -- : Successfully initialized 'puppet'
D, [2018-10-17T09:33:52.494477 ] DEBUG -- : Log buffer API initialized, available capacity: 2000/1000
I, [2018-10-17T09:33:52.494884 ] INFO -- : Successfully initialized 'logs'
I, [2018-10-17T09:33:52.497957 #2747] INFO -- : Settings loaded, reloading logger
E, [2018-10-17T09:33:52.501333 ] ERROR -- : Error during startup, terminating. settings ansible already registered
D, [2018-10-17T09:33:52.501766 ] DEBUG -- : ["/usr/share/foreman-proxy/lib/launcher.rb:65:in `instance_eval'", "/usr/lib/ruby/vendor_ruby/foreman_tasks_core/settings_loader.rb:21:in `each'", "/usr/lib/ruby/vendor_ruby/foreman_tasks_core/settings_loader.rb:21:in `register_settings'", "/usr/lib/ruby/vendor_ruby/foreman_tasks_core/settings_loader.rb:35:in `register_settings'", "/usr/lib/ruby/vendor_ruby/foreman_ansible_core.rb:18:in `<module:ForemanAnsibleCore>'", "/usr/lib/ruby/vendor_ruby/foreman_ansible_core.rb:11:in `<top (required)>'", "/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'", "/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'", "/usr/lib/ruby/vendor_ruby/smart_proxy_ansible/api.rb:1:in `<top (required)>'", "/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'", "/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'", "(eval):1:in `block (2 levels) in https_app'", "/usr/share/foreman-proxy/lib/launcher.rb:65:in `instance_eval'", "/usr/share/foreman-proxy/lib/launcher.rb:65:in `block (2 levels) in https_app'", "/usr/share/foreman-proxy/lib/launcher.rb:65:in `each'", "/usr/share/foreman-proxy/lib/launcher.rb:65:in `block in https_app'", "/usr/lib/ruby/vendor_ruby/rack/builder.rb:55:in `instance_eval'", "/usr/lib/ruby/vendor_ruby/rack/builder.rb:55:in `initialize'", "/usr/share/foreman-proxy/lib/launcher.rb:64:in `new'", "/usr/share/foreman-proxy/lib/launcher.rb:64:in `https_app'", "/usr/share/foreman-proxy/lib/launcher.rb:169:in `launch'", "/usr/share/foreman-proxy/bin/smart-proxy:6:in `<main>'"]