EXCEPTION: MongoDB\Driver\Exception\CommandException: BSON field 'skip' value must be >= 0, actual value '-10' in /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/mongodb/mongodb/src/Operation/Find.php:341 Stack trace: #0 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/mongodb/mongodb/src/Operation/Find.php(341): MongoDB\Driver\Server->executeQuery() #1 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/mongodb/mongodb/src/Collection.php(666): MongoDB\Operation\Find->execute() #2 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Mongo/MongoCursor.php(167): MongoDB\Collection->find() #3 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Mongo/MongoCursor.php(468): MongoCursor->doQuery() #4 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Alcaeus/MongoDbAdapter/AbstractCursor.php(301): MongoCursor->ensureCursor() #5 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Alcaeus/MongoDbAdapter/AbstractCursor.php(195): Alcaeus\MongoDbAdapter\AbstractCursor->ensureIterator() #6 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/papers.php(197): Alcaeus\MongoDbAdapter\AbstractCursor->rewind() #7 {main} Next MongoException: BSON field 'skip' value must be >= 0, actual value '-10' in /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Alcaeus/MongoDbAdapter/ExceptionConverter.php:92 Stack trace: #0 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Mongo/MongoCursor.php(171): Alcaeus\MongoDbAdapter\ExceptionConverter::toLegacy() #1 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Mongo/MongoCursor.php(468): MongoCursor->doQuery() #2 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Alcaeus/MongoDbAdapter/AbstractCursor.php(301): MongoCursor->ensureCursor() #3 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/vendor/alcaeus/mongo-php-adapter/lib/Alcaeus/MongoDbAdapter/AbstractCursor.php(195): Alcaeus\MongoDbAdapter\AbstractCursor->ensureIterator() #4 /srv/httpd/hepmdb.soton.ac.uk/htdocs/phenodata/papers.php(197): Alcaeus\MongoDbAdapter\AbstractCursor->rewind() #5 {main}