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) VALUES ('002f955c65a93f9775a2fd1137d9707e', -1, 1714675917, 1714675917, '0395d5d1', -4, 0)

Line : 158
File : sessions.php