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 ('dc2b19fc2e5e152d365c76eeb4cdc7dd', -1, 1634589587, 1634589587, '03eee858', -4, 0, 0)

Line : 187
File : sessions.php