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 ('94b9ad2c31ff1f3f3946a07c99376e0f', -1, 1730421069, 1730421069, '12740a44', -1280, 0, 0)

Line : 195
File : sessions.php