Wordpress Multisite: Sub domain wordpress site does not load

[askchris]

Server operating system version

Ubuntu 22.04

Plesk version and microupdate number

Plesk 18.0.54

Hi team,

I am currently using a temporary Plesk domain and have installed Wordpress multisite.

The main site is working fine but when I created a second site under it called event, I hit an error below (I suspect it's SSL related?) when I tried to visit the sub domain.

Please advise how I should look at resolving this issue.

Thank you.

 

[Peter Debik]

Can't an SSL certificate be installed for the new domain?

 

[askchris]

We have not decided on a domain name yet so we wanted to do everything on the temporary domain first. Is it not possible to use multi site (with sub domains) on the temporary domain? The temporary domain has been installed with SSL and also has wildcard SSL set up.