3D FlipBook - Hello! My WP-Version: 5.1.1_de_DE By the Install: Fatal error: Cannot redeclare iberezanskyfb3dget_dump() (previously

Hello! My WP-Version: 5.1.1_de_DE By the Install: Fatal error: Cannot redeclare iberezanskyfb3dget_dump() (previously declared in /usr/www/users/birgitd/wp-content/plugins/interactive-3d-flipbook-powered-physics-engine/index.php:15) in /usr/www/users/birgitd/wp-content/plugins/3d-flip-book/index.php on line 19 Please help me! Thanks Franz Schiechtl