fixed errors

app.py

@@ -939,10 +939,13 @@ def list_models(self):
 
     def get_active_model(self):
         if self.binding is not None:
-            models = self.binding.list_models(self.config)
-            index = models.index(self.config.model_name)
-            ASCIIColors.yellow("Listing models")
-            return jsonify({"model":models[index],"index":index})
+            try:
+                models = self.binding.list_models(self.config)
+                index = models.index(self.config.model_name)
+                ASCIIColors.yellow("Listing models")
+                return jsonify({"model":models[index],"index":index})
+            except Exception as ex:
+                return jsonify(None)
         else:
             return jsonify(None)
 

presets/build_latex_book.yaml

@@ -13,4 +13,12 @@ content: |
     \chapter{Introduction}
     @<generation_placeholder>@
     \end{document}
-    ```
+    ```
+snippets: 
+    - Import graphics(required to add graphics to the page) :
+        \usepackage[demo]{graphic}
+    - Add graph: |
+        \includegraphics[width=4in]{@<Image name>@}% Replace with your own image path
+
+help: |
+    Builds a latex code for a book