"Overflow" error encountered when loading 40,000+ rows using Journal Spreadsheet Upload template

When we try to import 30,000 odd lines via Spreadsheet Upload Import utility, the Import is Successful and Journal is created as expected. However when we have 40,000+ rows in the spreadsheet , on clicking "Import Now" on the application, we encountered "Overflow" error as shown in the attached document.

Steps to replicate:

1. Create a New sheet on the delivered template

2. Enter 40,000+ journal lines

3. Click "Import Now"

4. Error is encountered