Change to nullable

konifar · konifar · commit 508e748bae56 · 2018-03-21T17:57:43.000+09:00
diff --git a/library/src/main/java/co/kyash/vtl/VtlValidationFailureException.kt b/library/src/main/java/co/kyash/vtl/VtlValidationFailureException.kt
@@ -1,7 +1,7 @@
 package co.kyash.vtl
 
 class VtlValidationFailureException(
-        private val errorMessage: String
+        private val errorMessage: String?
 ) : RuntimeException(errorMessage) {
 
     companion object {
