diff --git a/cura/CuraApplication.py b/cura/CuraApplication.py
index 292d0bce94..5ac0f03b2e 100755
--- a/cura/CuraApplication.py
+++ b/cura/CuraApplication.py
@@ -1698,7 +1698,7 @@ class CuraApplication(QtApplication):
             result = workspace_reader.preRead(file_path, show_dialog=False)
             return result == WorkspaceReader.PreReadResult.accepted
         except Exception as e:
-            Logger.logException("e", "Could not check file %s: %s", file_url)
+            Logger.logException("e", "Could not check file %s", file_url)
             return False
 
     def _onContextMenuRequested(self, x: float, y: float) -> None:
diff --git a/plugins/3MFReader/ThreeMFWorkspaceReader.py b/plugins/3MFReader/ThreeMFWorkspaceReader.py
index 633142187c..b3dbad79ac 100755
--- a/plugins/3MFReader/ThreeMFWorkspaceReader.py
+++ b/plugins/3MFReader/ThreeMFWorkspaceReader.py
@@ -377,7 +377,9 @@ class ThreeMFWorkspaceReader(WorkspaceReader):
         parser = ConfigParser(interpolation = None)
         parser.read_string(serialized)
         quality_container_id = parser["containers"][str(_ContainerIndexes.Quality)]
-        quality_type = instance_container_info_dict[quality_container_id].parser["metadata"]["quality_type"]
+        quality_type = "empty_quality"
+        if quality_container_id not in ("empty", "empty_quality"):
+            quality_type = instance_container_info_dict[quality_container_id].parser["metadata"]["quality_type"]
 
         # Get machine info
         serialized = archive.open(global_stack_file).read().decode("utf-8")