Hmm... That's not much to work with, but I'll take a stab at it. The docs for HTTP::Tinyish say:

HTTP::Tinyish is a wrapper module for HTTP client modules LWP, HTTP::Tiny and HTTP client software curl and wget.

Backends are searched in the order of: LWP, HTTP::Tiny, Curl and Wget. HTTP::Tinyish will auto-detect if the backend also supports HTTPS, and use the appropriate backend based on the given URL to the request methods.

It sounds like that module tries pretty hard to find a way to load SSL URLs. If you're getting a "no backend configured for scheme https" error, my first question would be do you have OpenSSL installed? My next question would be can you access any HTTPS URL with LWP, HTTP::Tiny, curl or wget?

Cheers,

Brent

UPDATE: It's a slow night, so I had the time to read the source and the tests for HTTP::Tinyish look like they'll autodetect if SSL support is available on the four supported HTTP backends - LWP, HTTP::Tiny, curl, and wget - and run two SSL tests (per backend) if possible. What happens when you run the tests? - presumably you ran them when you installed the module?