Hey there,
the latest version of the Meta Box plugin is causing a Fatal Error for the MB Term Meta Extension:
Fatal error: Uncaught Error: Call to undefined function MBTM\get_current_screen() in meta-boxes/mb-term-meta/src/MetaBox.php:74
The issue is that get_current_screen() is only available in the WordPress admin area, but your enqueue() method is being called on the frontend (you can see wp_head() in the stack trace). The enqueue() method is hooked to wp_enqueue_scripts which runs on both frontend and admin, but get_current_screen() only exists in admin.