Databricks unable to list ADLS folder and files

CG29
New Contributor II

Hi Databricks Community,

I am able to list the container from my databricks workspace but unable to list the folder and files further.
If I try to access the same files and folder from the Databricks UI, external location path, I am able to see all files and folder.
I am getting output for below query.
dbutils.fs.ls("abfss://***@*****.dfs.core.windows.net/")

but if I run the below dbutils query, it runs for indefinite time without any output.
dbutils.fs.ls("abfss://***@*****.dfs.core.windows.net/foldername")

Please help me identify what I am missing here. Unable to read any files from my ADLS Gen2 Storage. Thanks !!