Thank you; that problem is now solved. Now, though, I'm getting an status error code 405 in my session token module. Any ideas of where the error is? Also, for the last module, I changed the header to what you suggested, but I didn't change the URL to reflect what is in the example above where it adds the highlighted portion "20. Record: stream_id/data." What is that?
I just have "https://www.streamr.com/api/v1/streams/Imd0iUxhT0SxEw-DMBHIAA/data" where that hexadecimal is the stream ID.