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 ('a11739c19398b3df55b6af0b27ed3649', -1, 1730419598, 1730419598, '039158f1', -1, 0, 0)

Line : 195
File : sessions.php