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 ('e488ee1ade234f3e48d8d9b8ff91d8c1', -1, 1711628101, 1711628101, '03e3fc57', -10, 0, 0)

Line : 187
File : sessions.php