[Support request] WP All Import Error

We see an error when using the WP All Import plugin to do WooCommerce product imports using PHP 8. Our host (WPengine) downgraded to 7.4 temporarily, which seemed to have mitigated the issue. They advised that I report this to you as it was likely related to theme support for PHP 8. Error text below. Thank you. Any insight would be appreciated.

[Mon Apr 10 15:07:58.393598 2023] [php:error] [pid 4668] [client 68.52.89.28:0] PHP Fatal error: Uncaught TypeError: get_object_vars(): Argument #1 ($object) must be of type object, null given in /nas/content/live/crystalfarmdev/wp-includes/class-wp-post.php:266\nStack trace:\n#0 /nas/content/live/crystalfarmdev/wp-includes/class-wp-post.php(266): get_object_vars(NULL)\n#1 /nas/content/live/crystalfarmdev/wp-content/plugins/wp-all-import-pro/models/import/record.php(4666): WP_Post->__construct(NULL)\n#2 /nas/content/live/crystalfarmdev/wp-content/plugins/wp-all-import-pro/controllers/admin/import.php(2757): PMXI_Import_Record->process(‘<?xml version=”…’, Object(Closure), 1, false, ‘/pmxi_records’, 5)\n#3 /nas/content/live/crystalfarmdev/wp-content/plugins/wp-all-import-pro/wp-all-import-pro.php(761): PMXI_Admin_Import->process()\n#4 /nas/content/live/crystalfarmdev/wp-includes/class-wp-hook.php(308): PMXI_Plugin->adminInit(”)\n#5 /nas/content/live/crystalfarmdev/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array)\n#6 /nas/content/live/crystalfarmdev/wp-includes/plugin.php(517): WP_Hook->do_action(Array)\n#7 /nas/content/live/crystalfarmdev/wp-admin/admin.php(175): do_action(‘admin_init’)\n#8 {main}\n thrown in /nas/content/live/crystalfarmdev/wp-includes/class-wp-post.php on line 266, referer: https://crystalfarmdev.wpengine.com/wp-admin/admin.php?page=pmxi-admin-import&action=process