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 ('a2ce6db9b1c90e30c56a0a02b62ea842', -1, 1713571791, 1713571791, '038fa8ac', -11, 0, 0)

Line : 187
File : sessions.php