pex install plv8 fails on MacOS Catalina

[ganeshan]

pex install plv8 results in the following message, please help

"$errmsg" is not exported by the Digest::SHA module
Can't continue after import errors at /usr/local/bin/shasum line 24.
BEGIN failed--compilation aborted at /usr/local/bin/shasum line 24.
/usr/local/bin/pex: line 647: [: =: unary operator expected
==> Downloading plv8 from https://github.com/plv8/plv8/archive/v2.1.0.tar.gz
-=O=- # # # #
"$errmsg" is not exported by the Digest::SHA module
Can't continue after import errors at /usr/local/bin/shasum line 24.
BEGIN failed--compilation aborted at /usr/local/bin/shasum line 24.
pex: SHA1 mismatch
Expected: aec2068e3826bddd3dff197f78e04bef9d5c2387
Actual: