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 ('c5a9d80524d76e49b05a5797bbb40e5a', -1, 1714363715, 1714363715, '0391c947', 12, 0)

Line : 158
File : sessions.php