2520998 - Error during phase: COPY-CRYPTO-FILES "Source sapjvm version is <null>"

During upgrade SUM gets stuck in phase COPY-CRYPTO-FILES with error "Source sapjvm version is <null>":

usr/sap/XXX/SUM/sdt/log/SUM/COPY-CRYPTO-FILES_01.LOG

<!--LOGHEADER[START]/-->
<!--HELP[Manual modification of the header may cause parsing problem!]/-->
<!--LOGGINGVERSION[2.0.7.1006]/-->
<!--NAME[/usr/sap/XXX/SUM/sdt/log/SUM/COPY-CRYPTO-FILES_01.LOG]/-->
<!--PATTERN[COPY-CRYPTO-FILES_01.LOG]/-->
<!--FORMATTER[com.sap.tc.logging.TraceFormatter(%d [%6s]: %m)]/-->
<!--ENCODING[UTF8]/-->
<!--LOGHEADER[END]/-->
[Info  ]: Copying new security libraries in sapjvm directories. Source sapjvm version is <null> and target sapjvm version is 6.1.072.
[Error ]: The following problem has occurred during step execution: com.sap.sdt.util.vers.SapjvmVersionFormatException: The SAP JVM version null is not valid
java.lang.NullPointerException: while trying to invoke the method java.lang.String.length() of a null object loaded from local variable 'str'
java.lang.NullPointerException: while trying to invoke the method java.lang.String.length() of a null object loaded from local variable 'str'

usr/sap/XXX/SUM/sdt/log/SUM/SET-SOURCE-SAPJVM-VERSION_01.LOG

<!--LOGHEADER[START]/-->
<!--HELP[Manual modification of the header may cause parsing problem!]/-->
<!--LOGGINGVERSION[2.0.7.1006]/-->
<!--NAME[/usr/sap/XXX/SUM/sdt/log/SUM/SET-SOURCE-SAPJVM-VERSION_01.LOG]/-->
<!--PATTERN[SET-SOURCE-SAPJVM-VERSION_01.LOG]/-->
<!--FORMATTER[com.sap.tc.logging.TraceFormatter(%d [%6s]: %m)]/-->
<!--ENCODING[UTF8]/-->
<!--LOGHEADER[END]/-->
[Info  ]: Configuration file /usr/sap/XXX/DVEBMGS00/exe/sapjvmmanifest.mf not found.
[Info  ]: Central SAP jvm directory detected: /usr/sap/XXX/DVEBMGS00/exe/sapjvm_6 with jvm version: <null>.

Update/Upgrade of JAVA stack with SUM.

SET-SOURCE-SAPJVM-VERSION, COPY-CRYPTO-FILES, CHECK-CRYPTO-FILES, sapjvmmanifest.mf, not found, SAPJVM, version, null, method java.lang.String.length, str , KBA , BC-UPG-TLS-TLJ , Upgrade tools for Java , Problem