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 ('70cad7d8e0e7a8d9c6e0316321bbb59e', -1, 1754583801, 1754583801, 'd849d88b', -9, 0, 0)

Line : 189
File : sessions.php