Update dash_plotly_QC_scRNA.py

dash_plotly_QC_scRNA.py

@@ -69,7 +69,7 @@ def update_dataset(dataset_chosen): #batch_chosen,
     global df
     filepath = f"az://data10xflex/{dataset_chosen}.parquet"
     df = pl.read_parquet(filepath,storage_options=storage_options)
-    return df
+    return
 
 min_value = df[col_features].min()
 max_value = df[col_features].max()