Issue-tracker get request with filtering not working

[danmikes]

Tell us what’s happening:
Describe your issue in detail here.

Both get-tests pass, yet the result when entering a query is always an empty array (open=true and open=false for example). the get route to show all issues (/api/issues/apitest) works. The error must be somewhere in the mongoose aggregation block in routes/api.js, but I have no clues as to how to find it. Console gives no errors.

Your project link(s)

solution: https://is-track.herokuapp.com
githubLink: GitHub - danmikes/is-track: A boilerplate for a freeCodeCamp project.

  app.route('/api/issues/:project')
  
    .get(function (req, res) {
      let projectName = req.params.project;
      const {
        _id,
        issue_title,
        issue_text,
        created_on,
        updated_on,
        created_by,
        assigned_to,
        open,
        status_text,
      } = req.query;

      ProjectModel.aggregate([
        { $match: { name: projectName } },
        { $unwind: "$issues" },
        !!_id
          ? { $match: { "issues._id": ObjectId(_id) } }
          : { $match: {} },
        !!issue_title
          ? { $match: { "issues.issue_title": issue_title } }
          : { $match: {} },
        !!issue_text
          ? { $match: { "issues.issue_text": issue_text } }
          : { $match: {} },
        !!created_on
          ? { $match: { "issues.created_on": created_on } }
          : { $match: {} },
        !!updated_on
          ? { $match: { "issues.updated_on": updated_on } }
          : { $match: {} },
        !!created_by
          ? { $match: { "issues.created_by": created_by } }
          : { $match: {} },
        !!assigned_to
          ? { $match: { "issues.assigned_to": assigned_to } }
          : { $match: {} },
        !!open
          ? { $match: { "issues.open": open } }
          : { $match: {} },
        !!status_text
          ? { $match: { "issues.status_text": status_text } }
          : { $match: {} },
        ]).exec((err, data) => {
          if (!data) {
            res.json([]);
          } else {
            let mapData = data.map((item) => item.issues);
            res.json(mapData);
          }
       })
    })

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.115 Safari/537.36

Challenge: Issue Tracker

Link to the challenge:

freeCodeCamp.org