Connection test failed

System Information
  • Strapi Version: 3.4.1
  • Operating System: Windows 10
  • Database: MongoDB
  • Node Version: v12.18.4
  • NPM Version: 6.14.6
  • Yarn Version: 1.22.4

I create a custom strapi project with MongoDB but it fails at the connection test. I already install MongoDB and it running. What should I do? Thanks!

Can you try to create the project using npx?
npx create-strapi-app@latest my-blog