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 ('eeab97b05ddf62e186a8fa8dd3ed63ab', -1, 1713502340, 1713502340, '0387c8d3', 3, 0, 0)

Line : 187
File : sessions.php