Ubuntu 20.04 http:// returns error code 7, connection refused In a Chrome Browser

I am using an AllWinner H618 Development board running Ubuntu 20.04 Jammy. Connected to this is a RPi Pico running as a web server on port 80. Using a Chrome browser and http://192.168.0.101/index.html, being the IP address of the web server I get 192.168.0.101 refused to connect. I have tried changing (https only mode) to allow http:// If I run sudo netstat -tulpn I get the following Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:1883 0.0.0.0:* LISTEN 1214/mosquitto tcp 0 0 0.0.0.0:445 0.0.0.0:* LISTEN 1920/smbd tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN 1920/smbd tcp 0 0 127.0.0.1:5939 0.0.0.0:* LISTEN 1127/teamviewerd tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 658/systemd-resolve tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1159/sshd: /usr/sbi tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1079/cupsd tcp6 0 0 :::1883 :::* LISTEN 1214/mosquitto tcp6 0 0 :::3389 :::* LISTEN 1365/xrdp tcp6 0 0 :::445 :::* LISTEN 1920/smbd tcp6 0 0 :::9001 :::* LISTEN 1214/mosquitto tcp6 0 0 :::139 :::* LISTEN 1920/smbd tcp6 0 0 :::22 :::* LISTEN 1159/sshd: /usr/sbi tcp6 0 0 ::1:3350 :::* LISTEN 1110/xrdp-sesman tcp6 0 0 ::1:631 :::* LISTEN 1079/cupsd udp 0 0 127.0.0.1:323 0.0.0.0:* 1116/chronyd udp 0 0 127.0.0.53:53 0.0.0.0:* 658/systemd-resolve udp 0 0 192.168.0.255:137 0.0.0.0:* 1086/nmbd udp 0 0 192.168.0.188:137 0.0.0.0:* 1086/nmbd udp 0 0 0.0.0.0:137 0.0.0.0:* 1086/nmbd udp 0 0 192.168.0.255:138 0.0.0.0:* 1086/nmbd udp 0 0 192.168.0.188:138 0.0.0.0:* 1086/nmbd udp 0 0 0.0.0.0:138 0.0.0.0:* 1086/nmbd udp6 0 0 ::1:323 :::* 1116/chronyd udp6 0 0 :::44479 :::* 1127/teamviewerd udp6 0 0 fe80::db8b:8c90:67c:546 :::* 932/NetworkManager I cannot see anything listening on port 80. If I run curl -v http://192.168.0.101:80 I get the following Trying 192.168.0.101:80... connect to 192.168.0.101 port 80 failed: Connection refused Failed to connect to 192.168.0.101 port 80 after 32 ms: Connection refused Closing connection 0 curl: (7) Failed to connect to 192.168.0.101 port 80 after 32 ms: Connection refused If I use another computer sitting along side the dev board, on a Chrome browser http://192.168.0.101/index.html It runs the index page and the rest of a program that resides on the Pico (webserver) connected to the Development board.