I am very new to API for Zoho Books and I have been able to write PHP scripts to list invoices, expenses journals  etc...

For example,  to get list of journals I use this URL in my PHP script:

https://books.zoho.com/api/v3/journals?authtoken=[MyToken]

But I do not understand how to get details of a journal.  The documentation says   " GET /journals/:journal_id"

How can I use it with PHP script. I tried all possibilities and I always get this error:

{"code":5,"message":"Invalid URL Passed"}

Can someone advise please

Regards