The exported output doesn't show data when a SORTBY clause is applied over the field, whose name contains parentheses()

Description:

When exporting an Xporter template with the SORTBY clause over a custom field, the exported output does not display the data if the field name contains parentheses "()".

Pre-conditions: Create a Custom field with Paratheses 

How to reproduce

1. Use the Xporter Template with the SORTBY clause over a custom field() to export the data. 

#{for subtasks|sortby=PC (Select One)} 

        Sample template to export the Task and export the Sub-Tasks, sorted by a custom field - SortyBy.docx

Actual result/Attachments

When the custom field contains parentheses in the name, the output does not display the data. 
However, if the custom field does not contain parentheses, the exported data shows the content as expected. 

Expected result:

The output should show the data sorting the data as expected, irrespective of the custom field name.

Version

• Xporter DC 7.4.1