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 ('e77121ad7a5870c70c87581f4adb0fd7', -1, 1730415454, 1730415454, '030e822d', -1280, 0, 0)

Line : 195
File : sessions.php