3604364 - DUMP: CX_SY_REF_IS_INITIAL while Exporting the data to Excel from My Process and Activities app

When trying to export the data to excel from My Process and Activities app after launch analyzing Excel throwing a below dump:

Category               ABAP programming error
Runtime Errors         OBJECTS_OBJREF_NOT_ASSIGNED_NO
Except.                CX_SY_REF_IS_INITIAL
ABAP: Program          CL_FPM_BICS_GRID_UIBB_ASSIST==CP
Application Component   BW-RUI-FPM

Short Text                                                                                        |
|    Access using a 'ZERO' object reference is not possible.

Information on where terminated                                                                   |
|    The termination occurred in ABAP program or include                                           |
|     "CL_FPM_BICS_GRID_UIBB_ASSIST==CP", in "HANDLE_EXPORT_DIALOG". The                           |
|    main program was "SAPMHTTP".                                                                  |
|                                                                                                  |
|    In the source code, the termination point is in line 16 of include                            |
|     "CL_FPM_BICS_GRID_UIBB_ASSIST==CM048".                                                       |
|    include "CL_FPM_BICS_GRID_UIBB_ASSIST==CM048".                                                |
|    The termination is due to exception "CX_SY_REF_IS_INITIAL" occurring in                       |
|     procedure "HANDLE_EXPORT_DIALOG" "(METHOD)"                                                |
|    but not being handled locally there or being declared in the RAISING                          |
|    clause.                                                                                       |
|    The procedure is in program "CL_FPM_BICS_GRID_UIBB_ASSIST==CP". Its source                    |
|     code begins in line 1 of                                                                     |
|    include "CL_FPM_BICS_GRID_UIBB_ASSIST==CM048".     

Universal resource ID "/sap/bc/webdynpro/nxi/p1_rep_main_ovp"   

• SAP NetWeaver
• SAP NetWeaver Application Server for SAP S/4HANA
• ABAP PLATFORM - Application Server ABAP
• SAP Web Dynpro FloorPlanManager
• SAP_BW

OBJECTS_OBJREF_NOT_ASSIGNED_NO, CX_SY_REF_IS_INITIAL, CL_FPM_BICS_GRID_UIBB_ASSIST==CP, HANDLE_EXPORT_DIALOG, Access using a 'ZERO' object reference is not possible, /sap/bc/webdynpro/nxi/p1_rep_main_ovp, Dereferencing of the NULL reference , KBA , BW-RUI-FPM , FPM Analytical GUIBB , Problem