Error - Trying to read value of type Dimension while reading a value of type CommaSeparator

I'm trying to complete Part 2 of the Robotics Object Pose Estimation tutorial (https://github.com/Unity-Technologies/Robotics-Object-Pose-Estimation) and cannot proceed past the "Add and Set Up Randomizers" Step 10 (Writing our Custom Object Rotation Randomizer) because I keep getting a "Tying to read value of type Dimension while reading a value of type CommaSeparator" console error. I cannot ignore the error, as I get a "All compiler errors have to be fixed before you can enter playmode!" pop-up error when I press play. I have Unity 2021.3.3f1 installed on a Windows 10 machine. I've followed all of the steps in the tutorial, so I'm not sure what I'm doing wrong. Any advice on how to fix this?