Post Type archive doesn't work

[jaymcp]

humanity-petitions/includes/class-post-type-petition.php

Line 364 in 011c6ab

'has_archive' => $this->post_type,

Here, the archive is registered to the post type slug, so that it inherits the same localisable prefix as the single.
However, visiting that slug triggers WP's URL guessing, rather than loading the archive.

The archive slug should be registered separately, and default to petitions (rather than the singular petition used for the post type single).