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 ('7170b99e2e5fac90c3307b023f094fca', -1, 1715944937, 1715944937, '0d3ba582', 15, 0)

Line : 158
File : sessions.php