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 ('3022fbfeee2c80f9ff79b840edd28346', -1, 1615286943, 1615286943, '03ef9e24', -23, 0, 0)

Line : 189
File : sessions.php