Add XAI

app.py

@@ -251,8 +251,7 @@ def visualize_knowledge_graph(g):
     # Handle empty graph case
     if not nx_graph.nodes():
         plt.figure(figsize=(12, 8))
-        plt.text(0.5, 0.5, "No knowledge graph to display.\\n(No aspects were detected in the documents)", 
-ha='center', va='center', fontsize=14, color='gray')
+        plt.text(0.5, 0.5, "No knowledge graph to display.\\n(No aspects were detected in the documents)", ha='center', va='center', fontsize=14, color='gray')
         buf = io.BytesIO()
         plt.savefig(buf, format='png', bbox_inches='tight')
         buf.seek(0)
@@ -292,7 +291,7 @@ ha='center', va='center', fontsize=14, color='gray')
     plt.title("Knowledge Graph of ESG Aspects", size=18)
     buf = io.BytesIO()
     plt.savefig(buf, format='png', bbox_inches='tight')
-buf.seek(0)
+    buf.seek(0)
     img = Image.open(buf)
     plt.close()
     return img