Problem with service

[matosh1]

Hi all. I came across that I started setting up the service. I created a secret key, then created a proxy tag in the telegram. I entered the parameters, but the following error occurs when starting
Jun 23 17:22:11 matoshi systemd[1]: MTProxy.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Jun 23 17:22:11 matoshi systemd[1]: MTProxy.service: Failed with result 'exit-code'.

My options
[Unit]
Description=MTProxy
After=network.target

[Service]
Type=simple
WorkingDirectory=/root/opt/MTProxy
ExecStart=/root/objs/bin/MTProxy/mtproto-proxy -u nobody -p 8888 -H 443 -S MySecretKey -P MyProxyTag
Restart=on-failure

[Install]
WantedBy=multi-user.target