Issue Tracker - PUT problem. update work locally, but not on database

Hello,

Im working on Issue Tracker project. My console showed the update is successfully, but actually did not update on mongo atlas database.

this is the doc i am trying to change the value of ‘issue_text’ from ‘before update’ to ‘after update’:

console showed the doc is updated successfully(issue_text is updated):

but when i check my mongo atlas database, the ‘issue_text’ didn’t update:

here is my code:

.put(async function (req, res) {
      // get the params from url.
      let project = req.params.project;
      const {
        _id,
        issue_title,
        issue_text,
        created_by,
        assigned_to,
        status_text,
        open,
      } = req.body;

      const update = {};
      // using loop to get each update info from req.body
      for (const key of Object.keys(req.body)) {
        if (req.body[key] !== "") {
          update[key] = req.body[key];
        }
      }

      try {
        ProjectModel.findOne({ name: project }, async (err, projectdata) => {
          if (err || !projectdata) {
            res.json({ error: "could not update", _id: _id });
          } else {
            console.log("we find the project");
            console.log(projectdata);

            projectdata.issues.forEach((issue) => {
              console.log(issue._id);
              if (issue._id == _id) {
                console.log("we find the issue");
                console.log(issue);
                issue.issue_title = issue_title || issue.issue_title;
                issue.issue_text = issue_text || issue.issue_text;
                issue.created_by = created_by || issue.created_by;
                issue.assigned_to = assigned_to || issue.assigned_to;
                issue.status_text = status_text || issue.status_text;
                issue.open = open;
                issue.updated_on = new Date();
                projectdata.save((err, data) => {
                  if (err || !data) {
                    res.json({ error: "could not update", _id: _id });
                  } else {
                    console.log("update is successfully");
                    console.log(data);
                    res.json({ result: "successfully updated", _id: _id });
                  }
                });
              }
            });
          }
        });
      } catch (err) {
        console.log(err);
      }
    })

I saw many people using projectdata.issues.id(_id) to get the issue by ID. when i used this code, i got a TypeError: projectdata.issues.id is not a function. Instead, i used forEach to get the issue by id.