raised runtimeexception on record without title or url

dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/bioschema/BioschemaToOAFTransformation.scala

@@ -101,7 +101,7 @@ object BioschemaToOAFTransformation {
 
     val titles: List[TitleType] = (json \\ "titles").extractOrElse[List[TitleType]](List())
     if (titles.isEmpty) {
-      return List()
+      throw new RuntimeException("Title not found")
     }
     result.setTitle(
       titles
@@ -192,7 +192,7 @@ object BioschemaToOAFTransformation {
         .asJava
     )
     if (instance.getUrl.isEmpty) {
-      return List()
+      throw new RuntimeException("Url not found")
     }
     instance.setCollectedfrom(collectedFromMap(datasourceKey))
     instance.setPid(result.getPid)