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 ('c29b8a9a92e2508f4e4e12ca9538e679', -1, 1715936839, 1715936839, '03873e2a', 15, 0)

Line : 158
File : sessions.php