Fatal error: Uncaught Error: Call to a member function getRelatedPostList() on null in /home/fcsus/public_html/applications/ECC/Mageplaza/Blog/view/frontend/templates/post/related_post.phtml:28 Stack trace: #0 {main} thrown in /home/fcsus/public_html/applications/ECC/Mageplaza/Blog/view/frontend/templates/post/related_post.phtml on line 28