This is the boilerplate for the Issue Tracker project. Instructions for building your project can be found at https://www.freecodecamp.org/learn/quality-assurance/quality-assurance-projects/issue-tracker
https://replit.com/@memorandum876/issueTrackerExpress
https://reflectoring.io/express-error-handling/
This site was easy to understand. https://www.digitalocean.com/community/tutorials/submitting-ajax-forms-with-jquery
https://api.jquery.com/serialize/
https://mongoosejs.com/docs/populate.html I made a bad design schema at first exatly described here.
https://stackoverflow.com/a/41906984/21951181
Deleting all documents was better.
https://stackoverflow.com/a/52334060/21951181
{ acknowledged: {boolean value}, deletedCount: {number of deleted item} }