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 ('2dd52943ab1e2ec960d16e64f99e1b11', -1, 1714308641, 1714308641, '031042ce', 2, 0)

Line : 158
File : sessions.php