2761160 - Upgrade stopped in phase MAIN_PROFEND/IGS_INST

While performing an upgrade using Software Update Manager (SUM) 1.0 HDB SP23, SUM fails with the following error in phase MAIN_PROFEND/IGS_INST!

[SAPupConsole.log]

...

<< 2019/02/26 16:23:53 END OF PHASE MAIN_PROFEND/IGS_INST

========== Repeat Phase ===========

Severe error(s) occurred in phase MAIN_PROFEND/IGS_INST!

Last error code set:

Extraction command failed with status 12, see '/<path>/SUM/abap/log/CAR.LOG'
for more details

[CAR.log]

...EXECUTING /<path>/SUM/abap/bin/SAPCAR -R /usr/sap/SMA/DVEBMGS21 -xvf /<path>/SUM/abap/var/IGSHELPER.SAR

SAPCAR: processing archive /<path>/SUM/abap/var/IGSHELPER.SAR (version 2.01)
x igs
x igs/igshelpermanifest.mf
x igs/conf
x igs/conf/gfwchart.tpl
x igs/conf/xmlchart.tpl
x igs/conf/imgconv.tpl
x igs/conf/bwgis.tpl
x igs/data
x igs/data/gfwchart
x igs/data/gfwchart/22000.bmp
x igs/data/gfwchart/22001.bmp
x igs/data/gfwchart/22002.bmp
x igs/data/gfwchart/22003.bmp
x igs/data/gfwchart/22004.bmp
x igs/data/gfwchart/22005.bmp
x igs/data/gfwchart/22006.bmp
x igs/data/gfwchart/22007.bmp
x igs/data/gfwchart/22008.bmp
x igs/data/gfwchart/22009.bmp
x igs/data/gfwchart/22010.bmp
x igs/data/gfwchart/22011.bmp
x igs/data/gfwchart/22012.bmp
x igs/data/gfwchart/22013.bmp
x igs/data/gfwchart/22014.bmp
x igs/data/gfwchart/22015.bmp
x igs/data/shapefiles
x igs/data/htdocs
x igs/data/output
x igs/data/fonts
x igs/data/fonts/ARIALUNI_J.TTF
SAPCAR: checksum error in /usr/sap/<SID>/DVEBMGS21/igs/data/fonts/ARIALUNI_J.TTF
SAPup> Process with PID 1553 terminated with status 12 at 20190226162815!

SUM 1.0 HDB SP23

sapcar; archive , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem