.kanti.dev is not a valid domain

[Kanti]

In Domain.php line 18:

   [Kanti\LetsencryptClient\Exception\InvalidDomainException]
   .kanti.dev is not a valid domain

 Exception trace:
   at /app/src/Dto/Domain.php:18
  Kanti\LetsencryptClient\Dto\Domain->__construct() at /app/src/Dto/DomainList.php:67
  Kanti\LetsencryptClient\Dto\DomainList::Kanti\LetsencryptClient\Dto\{closure}() at n/a:n/a
  array_map() at /app/src/Dto/DomainList.php:67
  Kanti\LetsencryptClient\Dto\DomainList::fromArray() at /app/src/Dto/DomainList.php:88
  Kanti\LetsencryptClient\Dto\DomainList->getWildCardDomainList() at /app/src/Command/NotifyCommand.php:54
  Kanti\LetsencryptClient\Command\NotifyCommand->execute() at /app/vendor/symfony/console/Command/Command.php:298
  Symfony\Component\Console\Command\Command->run() at /app/vendor/symfony/console/Application.php:1040
  Symfony\Component\Console\Application->doRunCommand() at /app/vendor/symfony/console/Application.php:301
  Symfony\Component\Console\Application->doRun() at /app/vendor/symfony/console/Application.php:171
  Symfony\Component\Console\Application->run() at /app/src/Application.php:70
  Kanti\LetsencryptClient\Application->__construct() at /app/s:10

var/data.json

[
  "kanti.dev",
null
]