Odoo won't start due to Unit is not loaded properly: Bad message. This is a fresh install using CentOS7 of Odoo11.  After processing 26 instructions to install Odoo11 with no errors, the first error produced comes after executing:  sudo systemctl start odoo11.  What is wrong with the 'Unit" section that would cause this problem?

The odoo11.service configuration file is as follows:

Unit]

Description=Odoo11

Requires=postgresql.service

After=network.target postgresql.service

[Service]

Type=simpleSyslog

Identifier=odoo11

Permissions

StartOnly=true

User=odoo

Group=odoo

ExecStart=/usr/bin/scl

enable rh-python35 -- /opt/odoo/odoo11-venv/bin/python3 /opt/odoo/odoo11/odoo-bin -c /etc/odoo11.conf

StandardOutput=journal+console

[Install]

WantedBy=multi-user.target