Saving an email in a campaign does not work: Cannot read property 'toLowerCase' of undefined

hello i downloaded the v.2.11.0 version of mautic. I have an error. When I try to create a reply email to my subscribers. I design the mail, but when I try to save it. He does not want. Here is the errator in the chrome console lien vers l’image; That he has encountered the same problem?



Lien vers l’image

And this is a button that not work:

hello i downloaded the v.2.11.0 version of mautic. I have an error. When I try to create a reply email to my subscribers. I design the mail, but when I try to save it. He does not want. Here is the errator in the chrome console lien vers l’image; That he has encountered the same problem?

Lien vers l’image
And this is a button that not work: