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 ('ac43b6b39fba0ad80f96824a4599fa56', -1, 1714289318, 1714289318, '12df7711', 21, 0)

Line : 158
File : sessions.php