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 ('e5e5d0f474b31f4c65911a00743bd4c8', -1, 1730419052, 1730419052, '030f1101', -1280, 0, 0)

Line : 195
File : sessions.php