Trying to open port 8000

I have an Nvidia Jetson running Ubuntu. I am trying to set up web2py. When I use Chrome on the Jetson it displays the 'hello world' for web2py but when I use a browser from another machine on the local network it cannot connect.

On the Jetson:

jrraines@Georgejetson:~$ nmap localhost
Starting Nmap 7.60 ( ) at 2019-06-23 17:59 CDT
Nmap scan report for localhost (127.0.0.1)
Host is up (0.00032s latency).
Not shown: 995 closed ports
PORT STATE SERVICE
22/tcp open ssh
111/tcp open rpcbind
3389/tcp open ms-wbt-server
5900/tcp open vnc
8000/tcp open http-alt
Nmap done: 1 IP address (1 host up) scanned in 0.17 seconds
jrraines@Georgejetson:~$
jrraines@Georgejetson:~$ sudo netstat -tulpn
[sudo] password for jrraines:
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:37861 0.0.0.0:* LISTEN 4451/containerd
tcp 0 0 127.0.0.1:5900 0.0.0.0:* LISTEN 9581/vino-server
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 3578/rpcbind
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 3563/systemd-resolv
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 4640/sshd
tcp 0 0 127.0.0.1:8000 0.0.0.0:* LISTEN 9169/python3
tcp 0 0 127.0.0.1:2947 0.0.0.0:* LISTEN 1/init
tcp6 0 0 ::1:5900 :::* LISTEN 9581/vino-server
tcp6 0 0 :::111 :::* LISTEN 3578/rpcbind
tcp6 0 0 :::22 :::* LISTEN 4640/sshd
tcp6 0 0 ::1:3350 :::* LISTEN 4632/xrdp-sesman
tcp6 0 0 :::3389 :::* LISTEN 4816/xrdp
tcp6 0 0 ::1:2947 :::* LISTEN 1/init
udp 0 0 224.0.0.251:5353 0.0.0.0:* 9858/chromium-brows
udp 0 0 224.0.0.251:5353 0.0.0.0:* 9819/chromium-brows
udp 0 0 0.0.0.0:5353 0.0.0.0:* 3726/avahi-daemon:
udp 0 0 127.0.0.53:53 0.0.0.0:* 3563/systemd-resolv
udp 0 0 0.0.0.0:67 0.0.0.0:* 4404/dhcpd
udp 0 0 0.0.0.0:68 0.0.0.0:* 5501/dhclient
udp 0 0 0.0.0.0:38998 0.0.0.0:* 4404/dhcpd
udp 0 0 0.0.0.0:111 0.0.0.0:* 3578/rpcbind
udp 0 0 0.0.0.0:37184 0.0.0.0:* 3726/avahi-daemon:
udp 0 0 0.0.0.0:786 0.0.0.0:* 3578/rpcbind
udp6 0 0 :::5353 :::* 3726/avahi-daemon:
udp6 0 0 :::111 :::* 3578/rpcbind
udp6 0 0 :::53822 :::* 3726/avahi-daemon:
udp6 0 0 :::786 :::* 3578/rpcbind
udp6 0 0 :::5032 :::* 4404/dhcpd 

On a Raspberry Pi on the network:

pi@rpi-HRA:~ $ sudo nmap 192.168.0.125
Starting Nmap 6.47 ( ) at 2019-06-24 10:48 UTC
Nmap scan report for 192.168.0.125
Host is up (0.00070s latency).
Not shown: 997 closed ports
PORT STATE SERVICE
22/tcp open ssh
111/tcp open rpcbind
3389/tcp open ms-wbt-server
MAC Address: 00:E0:4C:68:00:F8 (Realtek Semiconductor)
Nmap done: 1 IP address (1 host up) scanned in 35.14 seconds

As I look at this, it occurs to me that I have never been able to connect to the Jetson with VNC, either.

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