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, session_admin) VALUES ('b1cd6a1bab8a3bad8cf003214b62f8c1', -1, 1713579796, 1713579796, '0389b9b4', -1, 0, 0)

Line : 187
File : sessions.php