Can the default cluster Serverless of Databricks install Scala packages

[liu]

Can the default cluster Serverless of Databricks install Scala packages

I need to use the spark-sftp package, but it seems that serverless is different from purpose compute, and I can only install python packages?
There is another question. I can use purpose compute to put sftp files into dbfs through the paramiko package. Why do I get an error saying the folder cannot be found when using serverless to put sftp files into External Data(s3)

[-werners-]

no scala, you can't even run scala notebooks.

about the sftp: the serverless compute is way more limited than general purpose clusters.
what folder can't be found? dbfs or s3?

[liu]

@-werners- 
Thank you for your reply

dbfs and s3 both

Although I found a new method to fulfill my needs, unfortunately, there are still some issues.