Lets Start :
There are 2 steps:
- Access your Ghost instance
- Basic Information About Ghost Config File
- Config Your config.production.json File.

Show :80 port Error In Side Your Ghost CMS
Access your Ghost instance:

Open Your Google Console Dashboard

Open Your Google Console Dashboard Then Click Top Left Conner humbar Icon.Click Compute Engine, Select VM Instance Then Your VM Instance Page Open.

After Open Instance page.Click SSH Button.

After Open Your Instance Page. Then Click SSH Button. Some You See Open New Window In button Side you See Your SSH terminal Successfully Open.
Basic Information About Ghost Config File.
The ghost requires the domain name to be specified in the config.production.json /opt/bitnami/apps/ghost/htdocs/config.production.json file.
Check Your Config. Simple use cat command in side ssh terminal.
sudo cat /opt/bitnami/apps/ghost/htdocs/config.production.json

When You Open config.production.json Your URL
url: 'example.com:80'
Config Your config.production.json File
Paste A command In Your Terminal and Config Your Config.production.json File In Side Your Terminal Use Nano Editor.
If Like nano Editor So Paste Cmd With Nano.Other Wish You Any Other Editor Like Vim
Config With Nano Cmd (Recommanded )
sudo nano /opt/bitnami/apps/ghost/htdocs/config.production.json
Config With Vim Cmd
sudo Vim /opt/bitnami/apps/ghost/htdocs/config.production.json
Config With Nano Cmd:

Remove Only :80 Inside Your Domain Url Field.

Remove :80 Port Save Your File With Keyboard Shortcut
- Firstly Ctrl + O
- Click Enter
- Exit Ctrl+ X
After You File Save And Restart Your Ghost
sudo /opt/bitnami/ctlscript.sh restart ghost

After You Success Full Remove 80 Port Error In Your Ghost Cms. Check Out Now.
Read More About :80Port Error On Bitnami Community
