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 ('e3d645bc5c0426b878877e11b2f091c4', -1, 1634698798, 1634698798, '23acd9ae', 17, 0, 0)

Line : 187
File : sessions.php