By your instruction, I edited YAML file to include our password, username, appid, certid and devid in Trading, Shopping and Finding/Merchandising

Installed ebaysdk and attempted running the example provided on the main page of this project on Git Hub.

The resulting output is as follows:
None

If I print "f.error()", i get the following text:
findItemsAdvanced error:
Error sending request:Internal Server Error

Is this an issue because I am not sending a Token (even though according to eBay documentation I can pass a User Name and Password instead)?