Do you have this problem with every AI file, or just this one? Do any errors appear in the console (Shift-F10)?
If it’s limited to a specific AI file, it would be great if you could share the file. Some AI features (gradients & patterns for instance) aren’t supported, but the basic paths should at least be importing.
If it’s happening with every AI file, hopefully there’s an error in the console to help us figure out what’s going wrong.