Fixed parse endpoint error handling of unknown events.

Author: BillVolz

src/SocketLabs.EventWebhooks.Extensions/Controllers/ParsedMessagesController.cs

@@ -41,13 +41,19 @@ public async Task<IActionResult> Post(WebhookEventBase webhookEvent, string id)
             {
                 webhookEvent.WebhookEndpointName = id;
 
-                Task result = webhookEvent switch
+                Task? result = webhookEvent switch
                 {
                     MessageParsedEvent eventItem => ProcessEvent(eventItem),
                     ValidationEvent eventItem => ProcessEvent(eventItem),
-                    _ => throw new InvalidOperationException("Unable to convert event type.")
+                    _ => null
                 };
 
+                if (result == null)
+                {
+                    _logger.LogError("Unable to convert event type: {EventType} for MessageId: {MessageId}", webhookEvent.GetType().Name, webhookEvent.MessageId);
+                    return BadRequest($"Unknown event type: {webhookEvent.GetType().Name}");
+                }
+
                 await result;
             }
             catch (Exception ex)