update to be compatible with gradle 5.0

build.gradle

@@ -49,11 +49,12 @@ jacoco {
     reportsDir = file("$buildDir/JacocoReports")
 }
 
+
 jacocoTestReport {
     reports {
         xml.enabled false
         csv.enabled false
-        html.destination "${buildDir}/jacocoHtml"
+        html.destination file("${buildDir}/jacocoHtml")
     }
 }