fix for 2.12

Author: Piotr Fałdrowicz

engine/flink/executor/src/main/scala/pl/touk/nussknacker/engine/process/typeinformation/internal/typedobject/TypedJavaMapBasedTypeInformation.scala

@@ -1,6 +1,6 @@
 package pl.touk.nussknacker.engine.process.typeinformation.internal.typedobject
 
-import java.{util, util => jutil}
+import java.{util => jutil}
 import org.apache.flink.api.common.typeinfo.TypeInformation
 import org.apache.flink.api.common.typeutils.{TypeSerializer, TypeSerializerSnapshot}
 
@@ -24,7 +24,7 @@ case class TypedJavaMapSerializer(
   override def duplicate(serializers: Array[(String, TypeSerializer[_])]): TypeSerializer[jutil.Map[String, AnyRef]] =
     TypedJavaMapSerializer(serializers)
 
-  override def createInstance(): jutil.Map[String, AnyRef] = new util.LinkedHashMap(serializers.length)
+  override def createInstance(): jutil.Map[String, AnyRef] = new jutil.LinkedHashMap(serializers.length)
 
   override def snapshotConfiguration(
       snapshots: Array[(String, TypeSerializerSnapshot[_])]

utils/utils/src/main/scala/pl/touk/nussknacker/engine/util/json/ToJsonEncoder.scala

@@ -67,7 +67,7 @@ case class ToJsonEncoder(
           case a: UUID           => safeString(a.toString)
           case a: DisplayJson    => a.asJson
           case a: scala.collection.Map[_, _] => encodeMap(a.toMap)
-          case a: java.util.Map[_, _]        => encode(ListMap.from(a.asScala))
+          case a: java.util.Map[_, _]        => encode(ListMap(a.asScala.toList: _*))
           case a: Iterable[_]                => fromValues(a.map(encode))
           case a: Enum[_]                    => safeString(a.toString)
           case a: java.util.Collection[_]    => fromValues(a.asScala.map(encode))