reading data form url using spark ,community edition ,got a path related error ,any suggestions please ?

url = "https://raw.githubusercontent.com/thomaspernet/data_csv_r/master/data/adult.csv"
from pyspark import SparkFiles
spark.sparkContext.addFile(url)
# sc.addFile(url)
# sqlContext = SQLContext(sc)
# df = sqlContext.read.csv(SparkFiles.get("adult.csv"), header=True, inferSchema= True) 
df = spark.read.csv(SparkFiles.get("adult.csv"), header=True, inferSchema= True)

error:

Path does not exist: dbfs:/local_disk0/spark-9f23ed57-133e-41d5-91b2-12555d641961/userFiles-d252b3ba-499c-42c9-be48-96358357fb75/adult.csv