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 ('d3ab5d4e3eb2c17dcc298a85dc55b9dd', -1, 1730419049, 1730419049, '12ddad48', 35, 0, 0)

Line : 195
File : sessions.php