Getting 550 within SMM when trying to initialize SMM and mods over FTP

#version: '3'

services:
  sf-server:
    container_name: sf-server
    restart: unless-stopped
    image: 'wolveix/satisfactory-server:latest'
    ports:
    - redacted:7777/tcp
    - redacted:7777/udp
    - 8888:8888/tcp #default port
    volumes:
    - /home/redacted/satisfactory/sf-minimaus:/config
    environment:
    - MAXPLAYERS=6
    - PGID=redacted
    - PUID=redacted
    - ROOTLESS=false
    - STEAMBETA=false
    - MAXOBJECTS=3000000
    deploy:
      resources:
        limits:
          memory: 16G
        reservations:
          memory: 8G