diff --git a/lasConverter.py b/lasConverter.py
index 18476bc..fa6f051 100644
--- a/lasConverter.py
+++ b/lasConverter.py
@@ -257,7 +257,7 @@ def group_by_h3_cell(metadata: pd.DataFrame, cell_to_surveys: DefaultDict[str, L
         try:
             p.execute_streaming(chunk_size=500000)
             print(f"✅ Written H3 cell {c2}.")
-        except Exception as e:
+        except RuntimeError as e:
             print(f"⚠️ Pipeline failed for cell {c2}: {e}")
         finally:
             shutil.rmtree(temp_folder)