During the Cat Rescue module when verifying the Install Einstein Vision Apex Wrappers I am getting the following error:  There was an unexpected error in your org which is preventing this assessment check from completing: System.NullPointerException: null argument for JSONGenerator.writeStringField()

During the Cat Rescue module when verifying the Install Einstein Vision Apex Wrappers I am getting the following error:  There was an unexpected error in your org which is preventing this assessment check from completing: System.NullPointerException: null argument for JSONGenerator.writeStringField()