[BUG] Subgrid method OpenSubGridRecord() doesn't work

[Gshingavi0712]

Bug Report

EasyRepro Version

• Microsoft Dynamics 365 Online Version 8.2 (8.2.x) (DB 8.2.x) online
• Microsoft Dynamics 365 Online Version 9.0 (9.0.x) (DB 9.0.x) online
• Microsoft Dynamics 365 Online Version 9.0.2 (9.0.2) (DB 9.0.2) online
• Microsoft Dynamics 365 Online Version 9.1 (9.1.x) (DB 9.1.x) online

UCI or Classic Web

• UCI (XrmApp)

Online or On Premise

• Online

Browser

• Chrome

Describe the bug
Trying to open the record from a tab on the entity form. OpenSubGridRecord() method to open the record throws an exception.

Special formatting / display

Code to reproduce
xrmApp.Entity.SubGrid.OpenSubGridRecord();

Expected behavior
Should open the subgrid record.