Update tutorial-spark-pool-filesystem-spec.md

Author: negust-microsoft

articles/synapse-analytics/spark/tutorial-spark-pool-filesystem-spec.md

@@ -135,11 +135,13 @@ Run the following code.
 
    > [!NOTE]
    > Update the file URL in this script before running it.
+   > Please ensure you import pandas when using the below code snippet. This is critical for proper handling of access tokens  
 
    ```PYSPARK
    # Import libraries
    import fsspec
    import os
+   import pandas
    
    # Set variables
    local_file_name = "<local_file_name>"