After upgradering I try to use the import funktion on a course, but when I push import I get redirected to an empty page.
I am logged in as Site administrator
Server is running Ubuntu 18.04.1 PHP 7.2.5-0
Got the following
Fatal error: Class backup_flashcard_activity_task contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (backup_activity_task::define_my_settings) in /var/www/html/mod/flashcard/backup/moodle2/backup_flashcard_activity_task.class.php on line 0
Solved it by updating https://github.com/vfremaux/moodle-mod_flashcard
Info found at another question in here