Argument 1 passed to migrate() must be of the type array, null given

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Hi,

I am getting the following error when calling findOneBy() and the document is found (it happens with some documents):

PHP Catchable fatal error: Argument 1 passed to Doctrine\ODM\CouchDB\Migrations\NullMigration::migrate() must be of the type array, null given, called in /vendor/doctrine/couchdb-odm/lib/Doctrine/ODM/CouchDB/UnitOfWork.php on line 168 and defined in /vendor/doctrine/couchdb-odm/lib/Doctrine/ODM/CouchDB/Migrations/NullMigration.php on line 30

Stack trace:

PHP 9. Doctrine\ODM\CouchDB\DocumentRepository->findOneBy() /src/Acme/MyBundle/AcmeMyBundle.php:1532

PHP 10. Doctrine\ODM\CouchDB\DocumentRepository->findBy() /vendor/doctrine/couchdb-odm/lib/Doctrine/ODM/CouchDB/DocumentRepository.php:171

PHP 11. Doctrine\ODM\CouchDB\View\ODMQuery->execute() /vendor/doctrine/couchdb-odm/lib/Doctrine/ODM/CouchDB/DocumentRepository.php:145

PHP 12. Doctrine\ODM\CouchDB\UnitOfWork->createDocument() /vendor/doctrine/couchdb-odm/lib/Doctrine/ODM/CouchDB/View/ODMQuery.php:47

PHP 13. Doctrine\ODM\CouchDB\Migrations\NullMigration->migrate() /vendor/doctrine/couchdb-odm/lib/Doctrine/ODM/CouchDB/UnitOfWork.php:168

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By some reason "doc" is empty in response in execute() in /vendor/doctrine/couchdb-odm/lib/Doctrine/ODM/CouchDB/View/ODMQuery.php:

Doctrine\CouchDB\HTTP\Response Object
(
    [status] => 200
    [headers] => Array
        (
            [connection] => Keep-Alive
            [version] => 1.1
            [status] => 200
            [transfer-encoding] => chunked
            [server] => CouchDB/1.5.0 (Erlang OTP/R16B03)
            [etag] => "EZWGRJ67FTX8F4Z6W7BZW8X4U"
            [date] => Fri, 23 Sep 2016 06:40:45 GMT
            [content-type] => text/plain; charset=utf-8
            [cache-control] => must-revalidate
        )

    [body] => Array
        (
            [total_rows] => 70739
            [offset] => 18619
            [rows] => Array
                (
                    [0] => Array
                        (
                            [id] => 546a029f9b1d1bd32f400d92
                            [key] => Array
                                (
                                    [0] => Acme.MyBundle.CouchDocument.Links
                                    [1] => id
                                    [2] => 546a029f9b1d1bd36f700d92
                                )

                            [value] => Array
                                (
                                    [_id] => 546a029f9b1d1bd36f700d92
                                    [_rev] => 66-459d2c0f2c2d99bee4184252e996bc29
                                    [type] => Acme.MyBundle.CouchDocument.Links
                                    [url] => 'http://test.com'
                                )

                            [doc] =>
                        )

                )

        )

)

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#125 Fixed