Error uploading XLS file using "Import Excel to Database"

We are currently using "Import Excel to Database" smart service to upload XLSX or XLS files to write to Database in Appain 20.3

However, we are facing issue sometimes when uploading XLS file making the node to fail. There is no issue uploading with XLSX files though.

ERROR:

"The supplied data appears to be in the OLE2 Format. You are calling the part of POI that deals with OOXML (Office Open XML) Documents. You need to call a different part of POI to process this data (eg HSSF instead of XSSF)"

Has anyone come across above error or has any inputs on uploading .XLS file format without any issues in 20.3 version.