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 ('358c04a88bb0b3ac548ac5fab1d8e29c', -1, 1730418260, 1730418260, '03900c1d', -1280, 0, 0)

Line : 195
File : sessions.php