refactor: Handle exceptions and end traces in Graph class

This commit adds exception handling and trace ending functionality to the Graph class in the `base.py` file. It imports the `traceback` module and adds a try-except block to catch any exceptions that occur during graph execution. If an exception is caught, it logs the exception and ends all traces with the error message. Finally, it ensures that all traces are ended regardless of whether an exception occurred or not. This change improves the robustness and error handling of the Graph class.

src/backend/base/langflow/graph/graph/base.py

@@ -1,4 +1,5 @@
 import asyncio
+import traceback
 import uuid
 from collections import defaultdict, deque
 from datetime import datetime, timezone
@@ -341,7 +342,11 @@ class Graph:
             self.increment_run_count()
         except Exception as exc:
             logger.exception(exc)
+            tb = traceback.format_exc()
+            await self.end_all_traces(error=f"{exc.__class__.__name__}: {exc}\n\n{tb}")
             raise ValueError(f"Error running graph: {exc}") from exc
+        finally:
+            await self.end_all_traces()
         # Get the outputs
         vertex_outputs = []
         for vertex in self.vertices: