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 ('9e463dd10716c82c6ee1f20e1e3cd7f6', -1, 1714303328, 1714303328, '12bd1688', -9, 0)

Line : 158
File : sessions.php