To reproduce the issue:

Run replicaset:

• Run one node replicaset with version 8.0.4

  mlaunch init --replicaset --nodes 1
  

• Using mongosh `2.3.8` attempt to perform a write on `db.system.buckets.coll`:

  db.system.buckets.coll.insertOne({})
  

You will get the following error:

MongoServerError: This MongoDB deployment does not support retryable writes. Please add retryWrites=false to your connection string.