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 ('70efee7764f12cc5b3646e58f21a398b', -1, 1713583302, 1713583302, '030e8218', 6, 0, 0)

Line : 187
File : sessions.php