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) VALUES ('a02a6c26e726a139f6481c7dc1f8f2e3', -1, 1714636974, 1714636974, '030e8e73', -4, 0)

Line : 158
File : sessions.php