After domain is added, apache is reloading and every domain has wrong configuration. Above error is appeared.Invalid command '|FORCE_SSL_REDIRECT|', perhaps misspelled or defined by a module not included in the server configuration
Temporary resolve is to rebuild apache:
But true resolve is to add variable in config file:
Probably changing that value to 'no' would be proper also. After that restart DirectAdmin deamon.force_ssl=yes
Reason of the problem. There is no default value of 'force_ssl' which was added on 2018-12-10.