- MongoDB ODM 2.6 requires PHP 8.1 or newer. If you're not running PHP 8.1 yet, it's recommended that you upgrade to PHP 8.1 before upgrading ODM.
Minimal requirement of PHP 8.1 has rendered Match classes useless as one may
not use them for backward compatibility purposes as match is a reserved keyword.
Following classes were removed:
\Doctrine\ODM\MongoDB\Aggregation\Stage\GraphLookup\Match\Doctrine\ODM\MongoDB\Aggregation\Stage\Match