Problem with nodejs v.6.6.0

[DiV666]

Hi,

I have a problem when I try to update a field with i18n: true with the version of node 6.6.0

I have 2 servers. The development with the version of nodejs 6.4.0 and I have no problems, but in the test server, which has the version of nodejs 6.6.0 throws the following error:

Cannot set property 'es-ES' of undefined
    at model.Document.$__set (.../node_modules/mongoose/lib/document.js:889:21)
    at model.Document.set (.../node_modules/mongoose/lib/document.js:772:10)
    at model._handleIndex (.../node_modules/mongoose/lib/document.js:609:14)
    at model.Document.set (.../node_modules/mongoose/lib/document.js:569:24)
    at model._handleIndex (.../node_modules/mongoose/lib/document.js:593:12)
    at model.Document.set (.../node_modules/mongoose/lib/document.js:569:24)
    at model._handleIndex (.../node_modules/mongoose/lib/document.js:593:12)
    at model.Document.set (.../node_modules/mongoose/lib/document.js:569:24)
    at model._handleIndex (.../node_modules/mongoose/lib/document.js:593:12)
    at model.Document.set (.../node_modules/mongoose/lib/document.js:569:24)
    at model.Document.set (.../node_modules/mongoose/lib/document.js:642:14)
    at model.set [as emailConfig] (.../node_modules/mongoose/lib/document.js:1790:41)
    ...

The versions of mongo and mongoose are the same

You can help?