Orders broken + product updates

Hello guys,

Since a migration of WordPress + Woocommerce to new hosting, my website is broken :

* Orders are failing with “Unable to create orders”
* I cannot edit products anymore

After investigation, it seems all related to wp_posts. I double-checked, it still has AUTOINCREMENT + Unique ID.

Right before inserting data into wp_posts when creating the order, it goes through this filter (wp-includes/post.php):

$data = apply_filters( 'wp_insert_post_data', $data, $postarr );

And data becomes “empty array” whereas it’s not empty right before this call.

Any idea where I might look?

Thanks,

Kh3ops