M0 sandbox is not available it says "There is a limit of ine M0 cluster per project "
Hi, I had this same message - a while back I must have been fooling around with mongodb clusters - I had to delete an existing cluster in order to get a new cluster for this course.
Maybe check to see if you have an existing cluster - it would be located on the cloud.mongodb home page > left side nav > Clusters. Maybe you can rename it? I didn’t try this.
As Atlas provides an option to deploy one M0 Free Tier replica set per project, so you can either use your existing cluster or create a new project and then create the M0 free tier cluster.
Please refer to the following docs to :
Please let me know, if you have any questions.