PHP Fatal Error on CPT Export

Hi,

When trying to generate an export of custom post types I get this error:

“There has been a critical error on this website.”

With the log showing:

Got error 'PHP message: PHP Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, string g..............ps.com/[user]/public_html/wp-includes/class-wp-hook.php(327): WP_Hook->apply_filters()\n#5 /home/664195.cloudwaysapps.com/[user]/public_html/wp-includes/plugin...', referer: https://[website].com/wp-admin/admin.php?page=pmxe-admin-export

Any ideas what could be causing it?

It’s on Cloudways – Could this be due to ZipArchives not being enabled?

Edit: Cloudways say that it is enabled.