Update kotlin/gradle version

build.gradle

@@ -4,13 +4,12 @@ apply plugin: 'kotlin'
 sourceCompatibility = 1.8
 
 buildscript {
-    ext.kotlin_version = '1.1.4'
 
     repositories {
         mavenCentral()
     }
     dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.21"
     }
 }
 
@@ -33,7 +32,7 @@ sourceSets {
 }
 
 dependencies {
-    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+    compile "org.jetbrains.kotlin:kotlin-stdlib:1.3.21"
     compile 'net.portswigger.burp.extender:burp-extender-api:1.7.22'
     compile 'org.python:jython-standalone:2.7.0'
 } 

src/Request.kt

@@ -52,7 +52,7 @@ open class Request(val template: String, val words: List<String?>, val learnBori
             return 0
         }
         try {
-            return Integer.parseInt(response?.split(delimiters = " ", ignoreCase = false, limit = 3)?.get(1))
+            return Integer.parseInt(response?.split(" ", ignoreCase = false, limit = 3)?.get(1))
         } catch (e: Exception) {
             return 0
         }