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 ('a942704c8d3c7fccc07f1e2a6eb1632a', -1, 1711625085, 1711625085, '36cd74bb', -1, 0, 0)

Line : 187
File : sessions.php