mini lab : BigQuery : 5 - GCS bucket missing customers.csv

[edsfocci]

Hello, every time I start the lab "mini lab : BigQuery : 5", I run

gcloud storage ls gs://<bucket_name>/customers.csv

and I get "ERROR: (gcloud.storage.ls) One or more URLs matched no objects.". I cannot load the CSV file into BigQuery if it is missing (getting "BigQuery error in load operation: Error processing job '<project_name>:bqjob_r3ca6793f2a6ee75a_00000195ca40fa4f_1': Not found: URI gs://<bucket_name>/customers.csv")