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 ('1268437ae7e14c9792b4c64aba904ef0', -1, 1582724222, 1582724222, '035ecaac', -11, 0, 0)

Line : 191
File : sessions.php