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 ('e1cd1cdd1b176a27d7b84279e303cc40', -1, 1713492038, 1713492038, '1276a662', -7, 0, 0)

Line : 187
File : sessions.php