IPS\Http\Response Object
(
    [httpResponseVersion] => 1.1
    [httpResponseCode] => 401
    [httpResponseText] => Unauthorized
    [httpHeaders] => Array
        (
            [Content-Type] => text/plain;charset=UTF-8
            [Content-Length] => 19
            [Connection] => keep-alive
            [Date] => Sat, 09 Nov 2019 14:47:24 GMT
            [Server] => Apache/2.4.41 (Amazon) OpenSSL/1.0.2k-fips PHP/7.2.24
            [X-Powered-By] => PHP/7.2.24
            [X-Cache] => Error from cloudfront
            [Via] => 1.1 8f473fbf4c5fc98461ca6905ec13126d.cloudfront.net (CloudFront)
            [X-Amz-Cf-Pop] => HEL50-C1
            [X-Amz-Cf-Id] => 2Cekr3YLZuIVE78qfQMEBM1F4mYT1FQq9sZISqU5WWl_EyLxFPqhVA==
        )

    [cookies] => Array
        (
        )

    [content] => License Key Invalid
)

#0 /var/www/applications/core/modules/front/system/register.php(536): IPS\_Member->spamService()
#1 /var/www/applications/core/modules/front/system/register.php(233): IPS\core\modules\front\system\_register::_createMember()
#2 /var/www/applications/core/modules/front/system/register.php(86): IPS\core\modules\front\system\_register->_registrationForm()
#3 /var/www/init.php(816) : eval()'d code(27): IPS\core\modules\front\system\_register->manage()
#4 /var/www/system/Dispatcher/Controller.php(96): IPS\core\modules\front\system\nexus_hook_register->manage()
#5 /var/www/system/Dispatcher/Dispatcher.php(152): IPS\Dispatcher\_Controller->execute()
#6 /var/www/index.php(13): IPS\_Dispatcher->run()
#7 {main}

нулл отсюда, последний

решение