phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b217f6d37dc21e7d66416e79d8e070bf', -1, 1713581198, 1713581198, '12bfba48', -11, 0, 0)

Line : 187
File : sessions.php