Uncaught in PHP 7.2 but in PHP 7.1, you can't declare a method returns a generic ''object'' if it returns an instance of a class.
It's a new PHP 7.2 feature, see https://wiki.php.net/rfc/object-typehint.
Log on PHP 7.1
[Fri Feb 16 15:11:15 2018] 213.213.201.244:58258 [200]: / - Uncaught TypeError: Return value of Nasqueron\Api\ServersLog\LogEntry::fromJSON() must be an instance of Nasqueron\Api\ServersLog\object, instance of Nasqueron\Api\ServersLog\LogEntry returned in /srv/api/servers-log/src/LogEntry.php:43
Stack trace:
#0 /srv/api/servers-log/src/Service.php(42): Nasqueron\Api\ServersLog\LogEntry::fromJSON(Object(stdClass))
#1 /srv/api/servers-log/src/Service.php(33): Nasqueron\Api\ServersLog\Service->put(Object(stdClass))
#2 /srv/api/servers-log/src/public/index.php(19): Nasqueron\Api\ServersLog\Service->handle()
#3 {main}
thrown in /srv/api/servers-log/src/LogEntry.php on line 43