try to remove permission errors

antarest/study/storage/explorer_service.py

@@ -41,19 +41,20 @@ def list_dir(
         workspace = get_workspace_from_config(self.config, workspace_name, default_allowed=False)
         directory_path = get_folder_from_workspace(workspace, workspace_directory_path)
         directories = []
-        if os.access(directory_path, os.R_OK):  # we don't want to try to read folders we can't access
-            for child in directory_path.iterdir():
-                if (
-                    child.is_dir()
-                    and not is_study_folder(child)
-                    and not should_ignore_folder_for_scan(child)
-                    and not child.name.startswith((".", "$"))
-                ):
-                    # we don't want to expose the full absolute path on the server
-                    child_rel_path = child.relative_to(workspace.path)
-                    directories.append(
-                        NonStudyFolderDTO(path=child_rel_path, workspace=workspace_name, name=child.name)
-                    )
+        try:
+            children = list(directory_path.iterdir())
+        except PermissionError:
+            children = []  # we don't want to try to read folders we can't access
+        for child in children:
+            if (
+                child.is_dir()
+                and not is_study_folder(child)
+                and not should_ignore_folder_for_scan(child)
+                and not child.name.startswith((".", "$"))
+            ):
+                # we don't want to expose the full absolute path on the server
+                child_rel_path = child.relative_to(workspace.path)
+                directories.append(NonStudyFolderDTO(path=child_rel_path, workspace=workspace_name, name=child.name))
         return directories
 
     def list_workspaces(