also print exception when saving checkpoint

Author: vsey

src/lightning/pytorch/callbacks/model_checkpoint.py

@@ -350,7 +350,10 @@ def on_exception(self, trainer: "pl.Trainer", pl_module: "pl.LightningModule", e
             filepath = self.format_checkpoint_name(metrics=monitor_candidates, prefix=self.CHECKPOINT_EXCEPTION_PREFIX)
             self._save_checkpoint(trainer, filepath)
             self._save_last_checkpoint(trainer, monitor_candidates)
-            rank_zero_info(f"An exception was raised saved checkpoint to {filepath}")
+            rank_zero_info(
+                f"An {type(exception).__name__} was raised with message: \
+                {str(exception)}, saved checkpoint to {filepath}"
+            )
 
     @override
     def state_dict(self) -> dict[str, Any]: