Fatal error: Uncaught MongoDB\Driver\Exception\AuthenticationException: Authentication failed. in /var/www/html/blog-front-end/master/vendor/mongodb/mongodb/src/Operation/Find.php:219 Stack trace: #0 /var/www/html/blog-front-end/master/vendor/mongodb/mongodb/src/Operation/Find.php(219): MongoDB\Driver\Server->executeQuery('lvi2-back-end.n...', Object(MongoDB\Driver\Query), Object(MongoDB\Driver\ReadPreference)) #1 /var/www/html/blog-front-end/master/vendor/mongodb/mongodb/src/Collection.php(525): MongoDB\Operation\Find->execute(Object(MongoDB\Driver\Server)) #2 /var/www/html/blog-front-end/master/src/HydraCore/Storage/Storage.php(43): MongoDB\Collection->find(Array, Array) #3 /var/www/html/blog-front-end/master/index.php(40): HydraCore\Storage\Storage->find(Array, Array) #4 {main} thrown in /var/www/html/blog-front-end/master/vendor/mongodb/mongodb/src/Operation/Find.php on line 219