Thrive Product Manager

Fatal error: Uncaught Error: Class "TPM_Connection" not found in /home/speciale/public_html/wp-content/plugins/thrive-product-manager/inc/templates/header.phtml:3 Stack trace: #0 {main} thrown in /home/speciale/public_html/wp-content/plugins/thrive-product-manager/inc/templates/header.phtml on line 3