1 files changed, 4 insertions, 3 deletions

diff --git a/subprojects/language-web/src/main/java/tools/refinery/language/web/generator/ModelGenerationWorker.java b/subprojects/language-web/src/main/java/tools/refinery/language/web/generator/ModelGenerationWorker.java
index a3b6ca82..7febce7d 100644
--- a/subprojects/language-web/src/main/java/tools/refinery/language/web/generator/ModelGenerationWorker.java
+++ b/subprojects/language-web/src/main/java/tools/refinery/language/web/generator/ModelGenerationWorker.java
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
+ * SPDX-FileCopyrightText: 2023-2024 The Refinery Authors <https://refinery.tools/>
  *
  * SPDX-License-Identifier: EPL-2.0
  */
@@ -17,6 +17,7 @@ import tools.refinery.generator.ValidationErrorsException;
 import tools.refinery.language.web.semantics.PartialInterpretation2Json;
 import tools.refinery.language.web.xtext.server.ThreadPoolExecutorServiceProvider;
 import tools.refinery.language.web.xtext.server.push.PushWebDocument;
+import tools.refinery.store.reasoning.literal.Concreteness;
 import tools.refinery.store.util.CancellationToken;
 
 import java.io.IOException;
@@ -142,7 +143,7 @@ public class ModelGenerationWorker implements Runnable {
                 } catch (ValidationErrorsException e) {
                         var errors = e.getErrors();
                         if (errors != null && !errors.isEmpty()) {
-                                return new ModelGenerationErrorResult(uuid, "Validation error: " + errors.get(0).getMessage());
+                                return new ModelGenerationErrorResult(uuid, "Validation error: " + errors.getFirst().getMessage());
                         }
                         throw e;
                 }
@@ -154,7 +155,7 @@ public class ModelGenerationWorker implements Runnable {
                 notifyResult(new ModelGenerationStatusResult(uuid, "Saving generated model"));
                 cancellationToken.checkCancelled();
                 metadataCreator.setProblemTrace(generator.getProblemTrace());
-                var nodesMetadata = metadataCreator.getNodesMetadata(generator.getModel(), false);
+                var nodesMetadata = metadataCreator.getNodesMetadata(generator.getModel(), Concreteness.CANDIDATE);
                 cancellationToken.checkCancelled();
                 var relationsMetadata = metadataCreator.getRelationsMetadata();
                 cancellationToken.checkCancelled();