/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/ is in libmongodb-perl 1.8.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Aggregate.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_BatchInsert.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_BulkWrite.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Command.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Count.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_CreateIndexes.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Delete.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Distinct.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_DropCollection.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_DropDatabase.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_DropIndexes.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Explain.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_FSyncUnlock.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_FindAndDelete.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_FindAndUpdate.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_GetMore.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_InsertOne.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_KillCursors.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_ListCollections.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_ListIndexes.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_ParallelScan.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Query.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_RenameCollection.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/MongoDB/Op/_Update.pm