Gatling Quickstart Example: There is no simulation script

I’m going through the example provided on the Quickstart page (https://gatling.io/docs/current/quickstart/). I was able to run the recorder.sh script and I see my simulation in $GATLING_HOME/user-files/simulations/computerdatabase/BasicSimulation.scala

When I try to run $GATLING_HOME/bin/gatling.sh, I get the message: There is no simulation script. Please check that your scripts are in user-files/simulations

Can someone explain what’s happening and what I need to fix to get this working?