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 ('e2db5f10674ae46eb55d9e5f9c97d9a9', -1, 1711633634, 1711633634, '22ccb194', 3, 0, 0)

Line : 187
File : sessions.php