show graphics engine scriban errors in log (#2491)

* show graphics engine scriban errors in log

* better fix

CHANGELOG.md

@@ -16,6 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Changed
 - Use table instead of tree view on blocks page
+- Graphics engine: show scriban template rendering errors in playback troubleshooting log
 
 ## [25.7.0] - 2025-09-14
 ### Added

ErsatzTV.Core/InMemoryLogService.cs

@@ -16,8 +16,18 @@ public class InMemorySink : ILogEventSink
         {
             ConcurrentQueue<string> logQueue = _logs.GetOrAdd(correlationId, _ => new ConcurrentQueue<string>());
 
-            string message = logEvent.RenderMessage(CultureInfo.CurrentCulture);
-            logQueue.Enqueue($"[{logEvent.Timestamp:HH:mm:ss} {logEvent.Level}] {message}");
+            using (var writer = new StringWriter())
+            {
+                writer.Write($"[{logEvent.Timestamp:HH:mm:ss} {logEvent.Level}] ");
+                logEvent.RenderMessage(writer, CultureInfo.CurrentCulture);
+                if (logEvent.Exception != null)
+                {
+                    writer.WriteLine();
+                    writer.Write(logEvent.Exception);
+                }
+
+                logQueue.Enqueue(writer.ToString());
+            }
 
             while (logQueue.Count > 100)
             {

ErsatzTV.Infrastructure/Streaming/Graphics/GraphicsElementLoader.cs

@@ -221,7 +221,7 @@ public partial class GraphicsElementLoader(
         }
         catch (Exception ex)
         {
-            logger.LogWarning(ex, "Failed to load process graphics element YAML definition as template");
+            logger.LogWarning(ex, "Failed to render graphics element YAML definition as scriban template");
             return Option<string>.None;
         }
     }