b simulators

got std::out_of_range on substr exception with 10 as size and this is the only place i use substr with size 10

tools/simulators.cpp

@@ -119,6 +119,8 @@ json Simulators::changed_UI_items()
     // Then push the ui_item at that index to the changed json
     std::unordered_set<size_t> addedIndices;
 
+    try
+    {
         for (auto& item : diff)
         {
             std::string path = item["path"];
@@ -129,6 +131,11 @@ json Simulators::changed_UI_items()
             changed["event"]["UI_items"].push_back(after["UI_items"][index]);
             addedIndices.insert(index);
         }
+    }
+    catch(const std::exception& e)
+    {
+        spdlog::error(e.what());
+    }
 
     m_before = after;
     return changed;