UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.75 Safari/537.36

Steps to reproduce the problem:
All instances use the exact same cloud print registered printer.

Can successfully print a webpage from Windows 7 Chrome.

When attempting to print an uploaded file from https://www.google.com/cloudprint#jobs (accessed via Chrome on Windows 7) you receive a "Bad response from the server" message.

When trying to print from Gmail (Android 6.0.1 and Cloud Print 4.0, the Cloud Print Service is On) you receive an error notification "Printer error Gmail - <message subject>" and you are given the option to Cancel or Restart.  Restarting results in the same error notification.

I am hoping that this is the place to report such errors.  If not, could someone please point me to the correct one?

TIA

What is the expected behavior?
Content printed

What went wrong?
Content did not print.  Received error message or error notification depending upon the platform.

Did this work before? N/A 

Chrome version: 55.0.2883.75  Channel: n/a
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 23.0 r0

I initially reported this as a google-cloud-platform bug ( https://code.google.com/p/google-cloud-platform/issues/detail?id=176 )and was told that it should be reported here.