With EE2, Zoo Visitor was easy to install.

the lack of documentation makes it very difficult to install Visitor on EE3.

Here the copy of the screen installer.

Without the documentation I can't understand this error message:

An anonymous Guest member does not exist or is not linked with Visitor, go to the Visitor settings and select a member you want to use as anonymous Guest member.

I don't understand this error message too, because Visitor has created and anonymous Guest member.

If I click on install this messager error appears:

Does someone already has ever encountered these problems?