Update README.md

Author: tineshsf4652

README.md

@@ -134,4 +134,11 @@ internal class ViewModel : INotifyPropertyChanged
 
 ![DynamicTargetLine](https://github.com/user-attachments/assets/737beb67-861f-44f6-815f-3f6dde45d8fc)
 
+**Troubleshooting**
+
+Path too long exception
+
+If you are facing a path too long exception when building this example project, close Visual Studio and rename the repository to a shorter name before building the project.
+
+For more details, refer to the KB on [how to create and dynamically update target line for .NET MAUI Cartesian Chart?](https://support.syncfusion.com/agent/kb/18517).