Using script editer to load data always error

when I use script editer to exec this

import "experimental/csv"
csv.from(url: "")
   |> to(bucket:"sample")

always show this error

 failed to initialize execute state: could not find bucket "sample"

I have tried many scripts, they are all such errors, also can not find a solution on the Internet,

@df_df, you need to create a bucket named “sample” in your InfluxDB instance or update the query to write to a bucket you’ve already created. Just replace "sample" with an existing bucket name.

@scott very thanks,and if show this error how could I can fix it ?

error calling function "from" @10:1-10:67: error calling function "get" @experimental/csv/csv.flux|29:39-29:57: context deadline exceeded

this is my script

import "experimental/csv"

relativeToNow = (tables=<-) =>
    |> elapsed()
    |> sort(columns: ["_time"], desc: true)
    |> cumulativeSum(columns: ["elapsed"])
    |> map(fn: (r) => ({ r with _time: time(v: int(v: now()) - (r.elapsed * 1000000000))}))

csv.from(url: "")
  |> relativeToNow()
  |> to(bucket: "test-bucket", org: "test-org")

That error essentially means your request to download the CSV is timing out. Are you able to download the CSV file directly?