Issue Tracker Not able to filter document by field

I recently started this project under Quality Assurance Projects - Issue Tracker.
As of late i could not get my req.query to work with find method(mongoose) and req.params.project in get request.
User stories state the following :
6.I can filter my get request by also passing along any field and value in the query(ie. /api/issues/{project}?open=false). I can pass along as many fields/values as I want.
I am attaching link to my current project.
My Issue Tracker

After digging around on the internet.I found a stackoverflow question which helped me figure out how to filter url parameter in node.js. The following question link from stackoverflow shows how you can accomplish this. How to filter paramter in url by query string