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 ('b8971e56c2bff02c7da50a370f9fa6d4', -1, 1714695647, 1714695647, '03899d2d', 12, 0)

Line : 158
File : sessions.php