Hi,
I was trying to install Pressbooks.
When I tried to first install a Wordpress Multisite, I ran into issues.
Issue 1: When installed as a subdomain multisite with a subdomain, the sub of subdomain is NOT supported by SSL.
The following image shows that this can work, but I couldn't get the Let's encrypt SSL with wildcard DNS based sub-sub-domains to work.

That is, site1.msite.cloudron.club won't have SSL.
msite.cloudron.com > wildcard SSL will work
subdomain.msite.cloudron.com > wildcard SSL doesn't work.
Or is there something I am missing?
I quickly pivoted to try directory based wordpress multisite and used the following command in the terminal
/app/pkg/wp-convert-multisite --subdirectories
as per instructions from this documentation page as follows:
Open a Web Terminal. To use subdomains in multisite mode:
/app/pkg/wp-convert-multisite --subdomains
You can pass --subdirectories to install in subdirectory mode.
However, I got the following error - Issue 2:
/app/pkg/wp-convert-multisite: line 35: $2: unbound variable
And no changes were made to the .htaccess file.
I would appreciate if this can be looked into please. Thank you!