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Fatal error: Uncaught MongoDB\Driver\Exception\BulkWriteException: E11000 duplicate key error collection: newslettercollector_production.app_sessions index: session_id dup key: { : "fovbk6k23k1p8d7ngak8ejn36ppm0fj4akcvluo5fpriapjljf963cinp3rubtfq3brs2im9kgb7g10kocjvtmpgsr262hocuvlski0" } in /6i.nl/projects/newslettercollector/production/website/library/composer/vendor/mongodb/mongodb/src/Operation/Update.php:158 Stack trace: #0 /6i.nl/projects/newslettercollector/production/website/library/composer/vendor/mongodb/mongodb/src/Operation/Update.php(158): MongoDB\Driver\Server->executeBulkWrite('newslettercolle...', Object(MongoDB\Driver\BulkWrite), Object(MongoDB\Driver\WriteConcern)) #1 /6i.nl/projects/newslettercollector/production/website/library/composer/vendor/mongodb/mongodb/src/Operation/UpdateOne.php(92): MongoDB\Operation\Update->execute(Object(MongoDB\Driver\Server)) #2 /6i.nl/projects/newslettercollector/production/website/library/composer/vendor/mongodb/mongodb/src/Collection.php(842): MongoDB\Operation\UpdateOne in /6i.nl/projects/newslettercollector/production/website/library/composer/vendor/mongodb/mongodb/src/Operation/Update.php on line 158