Thank you for hints. I will check diver module.

PS. In case anybody has the same problem versions were from Debian Stretch and Buster installations: 

 

# command: 
# perl -e 'print $], "\n"; ' ; dpkg -l | egrep autovivifi


# Debian buster: 
5.028001
ii  libautovivification-perl          0.18-1+b1                    amd
+64        pragma for lexically disabling autovivification


# Debian stretch: 
5.024001
ii  libautovivification-perl          0.16-1+b2                       
+  amd64        pragma for lexically disabling autovivification

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In reply to Re^2: 5.24 -> 5.28 -- what has changed in autovivification? by leszekdubiel
in thread 5.24 -> 5.28 -- what has changed in autovivification? by leszekdubiel

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