Hummm, that’s probably the issue here. That’s a year old version. Ratel changed a lot since then. You might have to use local instead of the latest.
Change the Ratel query string address
from http://{yourIPAddrs}:8000/?latest
to ==> http://{yourIPAddrs}:8000/?local
Using the latest you gonna get the version that is in CDN (Which won’t work nicely with old versions). Using the query string for /?local will use a version that matches the version you are using locally.
I guess the error you got is related to the fact that we changed the way we read the formats (Headers params were changed). As now we support GraphQL in addition to JSON, GraphQL+- and RDF.
Change it and let me know if it works.
Cheers.
PS. Thats a very old Ratel Ratel Installer for Linux, MacOs and Windows (UPDATED 2020) if the local bundle don’t work for you. Try this program.