ZF2+Doctrine2 - Suddenly getting error on Mac: “Doctrine\ORM\EntityManager”; no instance returned

I am working on building a Zend Framework 2 (ZF2) website using Doctrine2 DBAL/ORM, where I develop equally on Windows and Mac, sometimes Linux (Ubuntu) (I like the all-around experience).I am working on building a Zend Framework 2 (ZF