Use this code to set up the VNC server as a systemd service. This will make it possible to start, stop, and restart it as needed, like any other systemd service.

Creating a VNC Service File

sudo nano /etc/systemd/system/vncserver@.service

PASTE this code (dont forget to change the username):
"""
[Unit]
Description=Start TightVNC server at startup
After=syslog.target network.target

[Service]
Type=forking
User=<user name>
WorkingDirectory=/home/<user name>

PIDFile=/home/<user name>/.vnc/%H:%i.pid

ExecStart=/usr/bin/vncserver -depth 24 -geometry 1280x800 :%i
ExecStop=/usr/bin/vncserver -kill :%i

[Install]
WantedBy=multi-user.target
"""
sudo systemctl daemon-reload

sudo systemctl enable vncserver@1.service

sudo systemctl start vncserver@1

sudo systemctl status vncserver@1