For some reason, a couple of files were created but not written to, or
truncated. These can be easily identified in the full installation log as
those modules with an
undef version number:
Checking dependencies from MYMETA.json ...
Checking if you have Task::Weaken 0 ... Yes (undef)
Checking if you have Devel::GlobalDestruction 0 ... Yes (undef)
Reinstalling the modules
Devel::GlobalDestruction should do the trick.