Menu not imported in PHP Version 7.0.8

I think that this is related to the following: https://php.net/manual/en/migration70.incompatible.php

Essentially adjusting the indirect variables and the problem would be resolved.
My suggestion would be to change the following in the wordpress-importer.php file in line 798 where it reads:

$$meta['key'] = $meta['value'];

to be inline with PHP 7 and backward compatible to the following:

${$meta['key']} = $meta['value'];

That worked, thanks Ana!

Is fixed in this commit.

https://github.com/boonebgorges/wordpress-importer/commit/1ddfa98de21ed5db8a4ac200d1ac3b616b4c25de