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 ('73b32fbf8076f2c689bf7c90741b87e9', -1, 1713408668, 1713408668, '030febc4', -10, 0, 0)

Line : 187
File : sessions.php