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 ('7bb1e065be0e9d9d37f0012f46d83dc9', -1, 1711619906, 1711619906, '035e66e4', -2, 0, 0)

Line : 187
File : sessions.php