phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1364 Field 'session_topic' doesn't have a default value

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('9435a81332168683dcc1046a06982e58', -1, 1714002104, 1714002104, '0395ef6e', 15, 0, 0)

Line : 193
File : sessions.php