Warning: Undefined variable $main_blocks in /home/claireha/public_html/FamilyTree/resources/views/tree-page.phtml on line 16

Fatal error: Uncaught Error: Call to a member function isEmpty() on null in /home/claireha/public_html/FamilyTree/resources/views/tree-page.phtml:16 Stack trace: #0 {main} thrown in /home/claireha/public_html/FamilyTree/resources/views/tree-page.phtml on line 16