improve error handling

packages/backend/Services/YaleAccessor.cs

@@ -56,23 +56,33 @@ namespace YaleAccess.Services
             // Flag to indicate if the driver is ready to use
             bool isReady = false;
 
+            // Message and flag to indicate if there was an error starting the driver
+            string? message = null;
+
             // Subscribe to the driver ready event
             driver.DriverReady += () =>
             {
                 isReady = true;
             };
 
-            driver.StartUpError += (message) =>
+            driver.StartUpError += (error) =>
             {
-                throw new Exception(message);
+                message = error;
             };
 
             // Wait for the driver to be ready
-            while (!isReady)
+            while (!isReady && message == null)
             {
+                // Sleep for a short time to avoid busy waiting
                 Thread.Sleep(100);
             }
 
+            // If there was an error starting the driver, throw an exception
+            if (message != null)
+            {
+                throw new Exception($"Failed to start the driver. Error message: {message}");
+            }
+
             // Get the lock node from the driver
             lockNode = driver.Controller.Nodes.Get(devicesOptions.YaleLockNodeId);
         }