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 ('9f5c7e5c491f332165654fdda9454c69', -1, 1714635928, 1714635928, '1276e345', 7, 0)

Line : 158
File : sessions.php