title: Null values from a csv on Scala and Apache Spark
body: <p>I'm using Apache Spark 2.3.0. When I upload a csv file and then I put df.show it shows me the table with all null values and I would like to know why because everything looks fine in the csv</p>
  
  <pre><code>val df = sqlContext.read.format("com.databricks.spark.csv").option("header","true").schema(schema).load("data.csv")
  
  val schema = StructType(Array(StructField("Rank",StringType,true),StructField("Grade", StringType, true),StructField("Channelname",StringType,true),StructField("Video Uploads",IntegerType,true), StructField("Suscribers",IntegerType,true),StructField("Videoviews",IntegerType,true)))
  
  Rank,Grade,Channelname,VideoUploads,Subscribers,Videoviews
  1st,A++ ,Zee TV,82757,18752951,20869786591
  2nd,A++ ,T-Series,12661,61196302,47548839843
  3rd,A++ ,Cocomelon - Nursery Rhymes,373,19238251,9793305082
  4th,A++ ,SET India,27323,31180559,22675948293
  5th,A++ ,WWE,36756,32852346,26273668433
  6th,A++ ,Movieclips,30243,17149705,16618094724
  7th,A++ ,netd mÃ¼zik,8500,11373567,23898730764
  8th,A++ ,ABS-CBN Entertainment,100147,12149206,17202609850
  9th,A++ ,Ryan ToysReview,1140,16082927,24518098041
  10th,A++ ,Zee Marathi,74607,2841811,2591830307
  11th,A+ ,5-Minute Crafts,2085,33492951,8587520379
  12th,A+ ,Canal KondZilla,822,39409726,19291034467
  13th,A+ ,Like Nastya Vlog,150,7662886,2540099931
  14th,A+ ,Ozuna,50,18824912,8727783225
  15th,A+ ,Wave Music,16119,15899764,10989179147
  16th,A+ ,Ch3Thailand,49239,11569723,9388600275
  17th,A+ ,WORLDSTARHIPHOP,4778,15830098,11102158475
  18th,A+ ,Vlad and Nikita,53,-- ,1428274554
  </code></pre>