Different Problems after Wordpress Migration

Question

I'm currently developing a WordPress website with Custom Post Types and custom search in post type. In localhost everything works fine but when I migrate the website online I get a different kind of problems which I try to list here:

• There are no pages except for Sample Page
• There are no custom posts (CPT are in admin but zero posts)
• Can't import post and CPTs with WordPress Importer
• Can't import post thumbnails
• There are no menus
• Can't see CPTs box in Menu Admin Page
• Get undefined function pll_current_language() (Polylang)

As you can see there are a lot of problem which sounds weird, never happened before, it's not my first WordPress website. Can you help me? My b-plan would be removing CPT and using normal posts. Cheers!

Answer 1

I found the solution, the problem was due to file permissions on my host.

Answer 2

are you sure you import the database from local to online in your phpmyadmin ??