Hello @crspeller Thank you so much for helping me.
I am actually a math postgrad who is trying to do programming on my own, since my programmer partner is hospitalized for quite some time. Sorry if my lack of knowledge surprise you.
I actually destroyed the droplet to do clean reinstall.
The psql is installed in Mattermost-DB
The ./platform is run in Mattermost-Server, and i got the problem here:
Here are the two guides i am using:
- Original: http://docs.mattermost.com/install/prod-ubuntu.html
- Rosehost: https://www.rosehosting.com/blog/install-mattermost-on-an-ubuntu-vps/