It is far, far too early to say that. Experimental error is still by far the most likely explanation.

Also, even if it does work as claimed, the thrust it provides does not allow all the lovely things that its inventor has claimed. Even if it is useful for long range space missions (if it actually does generate thrust), it is no use for flying cars or putting things into orbit as has been claimed (the mass needed for batteries or a nuclear generator far exceed the "drive"'s lifting abilities).