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 ('17834a58f2ac31ec931ca83bf64c22f9', -1, 1711620382, 1711620382, '36a6dfcc', -10, 0, 0)

Line : 187
File : sessions.php