diff --git a/mm_agents/accessibility_tree_wrap/heuristic_retrieve.py b/mm_agents/accessibility_tree_wrap/heuristic_retrieve.py
index 47bbca0..ccb4886 100644
--- a/mm_agents/accessibility_tree_wrap/heuristic_retrieve.py
+++ b/mm_agents/accessibility_tree_wrap/heuristic_retrieve.py
@@ -40,6 +40,8 @@ def filter_nodes(nodes):
                 filtered_nodes.append(node)
         elif node.tag == 'text':
             continue
+        elif node.get("name") == "" and node.text is None:
+            continue
         else:
             coords = tuple(
                 map(int, node.attrib.get('{uri:deskat:component.at-spi.gnome.org}screencoord').strip('()').split(', ')))
diff --git a/mm_agents/gpt_4v_agent.py b/mm_agents/gpt_4v_agent.py
index 323e08f..cc08b79 100644
--- a/mm_agents/gpt_4v_agent.py
+++ b/mm_agents/gpt_4v_agent.py
@@ -39,7 +39,10 @@ def linearize_accessibility_tree(accessibility_tree):
     for node in filtered_nodes:
         linearized_accessibility_tree += node.tag + "\t"
         linearized_accessibility_tree += node.attrib.get('name') + "\t"
-        linearized_accessibility_tree += (node.text if '"' not in node.text else '"{:}"'.format(node.text.replace('"', '""'))) + "\t"
+        if node.text:
+            linearized_accessibility_tree += (node.text if '"' not in node.text else '"{:}"'.format(node.text.replace('"', '""'))) + "\t"
+        else:
+            linearized_accessibility_tree += '""\t'
         linearized_accessibility_tree += node.attrib.get(
             '{uri:deskat:component.at-spi.gnome.org}screencoord') + "\t"
         linearized_accessibility_tree += node.attrib.get('{uri:deskat:component.at-spi.gnome.org}size') + "\n"
@@ -87,7 +90,7 @@ def parse_actions_from_string(input_string):
             try:
                 action_dict = json.loads(input_string)
                 return [action_dict]
-            except json.JSONDecodeError as e:
+            except json.JSONDecodeError:
                 raise ValueError("Invalid response format: " + input_string)