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 ('a6b60881c11e2327fd8cc9c0cc27f717', -1, 1614752135, 1614752135, '03eb6cbc', -16, 0, 0)

Line : 189
File : sessions.php