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 ('3c6f4ebab51b01422a0c775ed7aa0ade', -1, 1713852610, 1713852610, '12bd027a', 2, 0, 0)

Line : 187
File : sessions.php