2692713 - HANA upgrade fails with "cannot decode boolean value" error

Updating the HANA revision fails with the following error:

INFO:     Output line 30: Upgrade failed
INFO:     Output line 31:   error upgrading
INFO:     Output line 32:
INFO:     Output line 33: Log file written to '/var/tmp/hdb_<SID>_hdblcm_update_2018-09-06_14.24.27/hdbupd.log' on host '<hostname>'.
INFO:     Program terminated with exit code 1
ERR :   Update of SAP HANA Database failed

hdbupd.log shows below messages:

INFO: Getting global.ini
INFO:   Reading global.ini
INFO:     Layer 'Default' found
INFO:     Layer 'System' found
INFO:     Layer 'Host' not found
INFO: Found value 'communication/ssl' = 'sapcrypto' in layer 'System'
ERR : Parameter 'global.ini/communication/ssl' cannot decode boolean value 'sapcrypto'
ERR : error upgrading
ERR : Upgrade failed
INFO: Wrote 921520 bytes
INFO: InstallRegistry successfully unlocked
INFO: InstallRegistry closed
INFO: Summary of critical errors
ERR :   Upgrade failed
ERR :     error upgrading

SAP HANA Platform

sapcrypto, ssl, upgrade, fails, failed, upgradation, update, updatation, err, update, hdblcm, hdbupd, hdbupd.log, global.ini, communication, crypto , KBA , HAN-LM-UPG-DB , Upgrade of HANA Database , HAN-DB , SAP HANA Database , Problem