Update from 5.3.0 to 5.7.0 doesn't work

Troubleshooting
7

Hello,

I see no errors in the mattermost log.
Here is the content of less /lib/systemd/system/mattermost.service :
[Unit]
Description=Mattermost
After=network.target
After=postgresql.service
Requires=postgresql.service

[Service]
Type=notify
ExecStart=/opt/mattermost/bin/mattermost
TimeoutStartSec=3600
Restart=always
RestartSec=10
WorkingDirectory=/opt/mattermost
User=mattermost
Group=mattermost
LimitNOFILE=49152

[Install]
WantedBy=multi-user.target