I'm using symfony 3.2.6 on production server getting errors regarding array cache adapter.

Stack trace.

NoticedError: Failed to save key "%5BTsBet%5CPlayer%5CEntity%5CBE%5CDiscountsBirthdays%5D%5B1%5D" (array)
in newrelic_notice_error called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/monolog/monolog/src/Monolog/Handler/NewRelicHandler.php (91)
in Monolog\Handler\NewRelicHandler::write called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (8132)
in Monolog\Handler\AbstractProcessingHandler::handle called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (8634)
in Monolog\Logger::addRecord called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (8725)
in Monolog\Logger::warning called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (1409)
in Symfony\Component\Cache\CacheItem::log called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (1029)
in Symfony\Component\Cache\Adapter\AbstractAdapter::commit called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (997)
in Symfony\Component\Cache\Adapter\AbstractAdapter::save called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/ChainAdapter.php (64)
in Symfony\Component\Cache\CacheItem::Symfony\Component\Cache\Adapter{closure} called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/symfony/symfony/src/Symfony/Component/Cache/Adapter/ChainAdapter.php (84)
in Symfony\Component\Cache\Adapter\ChainAdapter::getItem called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (2705)
in Symfony\Component\Cache\DoctrineProvider::doFetch called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/app/cache/prod/classes.php (2591)
in Doctrine\Common\Cache\CacheProvider::fetch called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/CachedReader.php (188)
in Doctrine\Common\Annotations\CachedReader::fetchFromCache called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/annotations/lib/Doctrine/Common/Annotations/CachedReader.php (78)
in Doctrine\Common\Annotations\CachedReader::getClassAnnotations called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/Driver/AnnotationDriver.php (63)
in Doctrine\ORM\Mapping\Driver\AnnotationDriver::loadMetadataForClass called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/Driver/MappingDriverChain.php (102)
in Doctrine\Common\Persistence\Mapping\Driver\MappingDriverChain::loadMetadataForClass called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php (151)
in Doctrine\ORM\Mapping\ClassMetadataFactory::doLoadMetadata called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php (332)
in Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory::loadMetadata called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/ClassMetadataFactory.php (78)
in Doctrine\ORM\Mapping\ClassMetadataFactory::loadMetadata called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Mapping/AbstractClassMetadataFactory.php (216)
in Doctrine\Common\Persistence\Mapping\AbstractClassMetadataFactory::getMetadataFor called at /var/www/vhosts/app/api.example.com/releases/20170314153900_dev/vendor/doctrine/orm/lib/Doctrine/ORM/EntityManager.php (281)

PS. with 3.2.3 version there was no errors like this. PHP version 5.6.26