When I am trying to install aleph into swiprolog, I got the errors as follow. Did I do something wrong?
?- pack_install(aleph).
% Contacting server at http://www.swi-prolog.org/pack/query ... ok
Install aleph@5 from GIT at https://github.com/friguzzi/aleph.git Y/n?
ERROR: source_sink `path(git)' does not exist
ERROR: In:
ERROR: [21] throw(error(existence_error(source_sink,...),_6768))
ERROR: [17] process:process_create(path(git),
[clone,'https://github.com/friguzzi/aleph.git'|...],[stdout(...),...|...]) at
c:/prolog/swipl/library/process.pl:242
ERROR: [16] <meta call>
ERROR: [15] '$sig_atomic'(prolog_pack:process_create(...,...,...))
<foreign>
ERROR: [14]
......