[SeekAndFind]

Jehovah Witness New World Translation of the same:

“In the beginning was the Word, and the Word was with God,+ and the Word was a god”

[Verginius Rufus]

There is no article with theos in the last clause, so in theory it could be translated as "a god," but only if the author of St. John's Gospel believed that multiple gods exist.

Likewise, in Matthew 4.4, where Jesus quotes from Deuteronomy 8.3, it could be translated as "the mouth of a god," but I don't think anyone will try to claim that the author of Deuteronomy was a polytheist.