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 ('2a4202bb25c89bf7454845ff2c9e6755', -1, 1714044712, 1714044712, '03922523', 0, 0, 0)

Line : 187
File : sessions.php