Update app.py

app.py

@@ -1585,15 +1585,16 @@ if __name__ == "__main__":
         logger.error(f"Error running application: {e}")
     
     def load_templates(self):
-        """Load all templates from directory"""
-        try:
-            # Load built-in templates
-            self.templates.update(self._get_builtin_templates())
-            # Load custom templates
-            for template_file in self.template_dir.glob("*.json"):
-                try:
-                    with open(template_file, 'r', encoding='utf-8') as f:
-                        template_data = json.load(f)
+    """Load all templates from directory"""
+    try:
+        # Load built-in templates
+        self.templates.update(self._get_builtin_templates())
+        
+        # Load custom templates
+        for template_file in self.template_dir.glob("*.json"):
+            try:
+                with open(template_file, 'r', encoding='utf-8') as f:
+                    template_data = json.load(f)
                         name = template_file.stem
                         self.templates[name] = Template(**template_data)                
                 except Exception as e: