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 ('12540d77b95ff68179fd081a257e7c9e', -1, 1714372695, 1714372695, '340edd71', -4, 0)

Line : 158
File : sessions.php