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 ('47503d8e238dc22903ea1e9cb460c846', -1, 1628178141, 1628178141, '12ce4ce2', -10, 0, 0)

Line : 187
File : sessions.php