OZG-5988 check if CommandExecutedEvent has no command

bescheid-manager/src/main/java/de/ozgcloud/bescheid/BescheidEventListener.java

@@ -23,6 +23,8 @@
  */
 package de.ozgcloud.bescheid;
 
+import static java.util.Objects.*;
+
 import java.time.LocalDate;
 import java.util.Arrays;
 import java.util.Optional;
@@ -79,7 +81,7 @@ class BescheidEventListener {
 	public static final Predicate<Command> IS_CREATE_BESCHEID_DOCUMENT_COMMAND = command -> CREATE_BESCHEID_DOCUMENT_ORDER.equals(command.getOrder());
 	private static final String IS_CREATE_BESCHEID_DOCUMENT = "{T(de.ozgcloud.bescheid.BescheidEventListener).IS_CREATE_BESCHEID_DOCUMENT_COMMAND.test(event.getSource())}";
 
-	public static final Predicate<Command> IS_SEND_BESCHEID_COMMAND = command -> SEND_BESCHEID_ORDER.equals(command.getOrder());
+	public static final Predicate<Command> IS_SEND_BESCHEID_COMMAND = command -> nonNull(command) && SEND_BESCHEID_ORDER.equals(command.getOrder());
 	private static final String IS_SEND_BESCHEID = "{T(de.ozgcloud.bescheid.BescheidEventListener).IS_SEND_BESCHEID_COMMAND.test(event.getSource())}";
 	private static final String IS_SEND_BESCHEID_ORDER = "{T(de.ozgcloud.bescheid.BescheidEventListener).IS_SEND_BESCHEID_COMMAND.test(event.getCommand())}";