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 ('7e880eb5ebed87c64217a2eb6b3f2440', -1, 1714544762, 1714544762, '12e02c6c', 12, 0)

Line : 158
File : sessions.php