Could not find a blog URL
I installed Plume in a public directory on my Solid server, created a public directory for the blog posts and moved the config-example.json to config.json and referred to the right owner and posts URL. But when I open Plume, I get the following error:
Could not find a blog URL.
If you would like, Plume can attempt to find your blog, or help you create one.
Do you use WebID? []
Yes, I use WebID No, I need a WebID
When I click on "Yes, I use WebID", I get the error message "Authentication failed". In Solid server's logs, I can't find any error. What could cause this?
I have the same problem using this configuration:
{
"owners": ["https://mag.solid.community/profile/card#me"],
"title": "Mathias Kahl's Blog",
"tagline": "About software development",
"picture": "img/logo.svg",
"fadeText": true,
"showSources": true,
"cacheUnit": "days",
"defaultPath": "posts",
"postsURL": "https://mag.solid.community/public/blog/posts/"
}

There are no error messages in the web console, though it dumps this XMLHTTPRequest object that shows that it uses databox.me (which is being retired). I guess it should allow using arbitrary providers. I'm new into the project but I will try looking into it.
I'm getting this error as well.
I went into my public folder and posts folder and manually made a source file, copying a friend's initial blog post. I think this error is just from there being no posts in the posts folder yet.
Also my buddy points to me that this project has been forked: https://github.com/theWebalyst/solid-plume
So that one is more recent.
Also see this post: https://thewebalyst.solid.community/plume/
Good luck and let me know how you get on.