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 ('f6dce4977cc0b38347686df3ee86c8d3', -1, 1713481083, 1713481083, '12dea31f', -11, 0, 0)

Line : 187
File : sessions.php