diff --git a/api/src/org/labkey/api/moduleeditor/api/ModuleEditorService.java b/api/src/org/labkey/api/moduleeditor/api/ModuleEditorService.java
index 894e4b806be..40e2b438e78 100644
--- a/api/src/org/labkey/api/moduleeditor/api/ModuleEditorService.java
+++ b/api/src/org/labkey/api/moduleeditor/api/ModuleEditorService.java
@@ -66,4 +66,11 @@ default File getFileForModuleResource(Module module, Path path)
             return null;
         return FileUtil.appendPath(resources, path);
     }
+
+    // used by ModuleResourceProvider@AllModuleResourcesRoot() (_webdav/@modules) which wants to soo
+    // the whole module source directory (e.g. when using SourcePath)
+    default File getModuleRoot(Module module, @Nullable List<String> messages)
+    {
+        return null;
+    }
 }
\ No newline at end of file