San Juan de la Cruz / John of the Cross / noche

If you search Google Books for

aunque es de noche

you may note a curiosity that is even more widespread on web pages.

Some editions close the "fonte" poem with that phrase and not with

aunque de noche

This is not the case in Willis Barnstone's translation of "The Poems of Saint John of the Cross".

The preceding stanza appears to introduce this subtlety as it closes with the one other variant in the poem.

But how to confirm what may have been the original text?

Do these errors on the web arise from copy-n-paste ?