当我在swi-prolog中使用安装程序来安装aleph时，我得到了错误：source_sink`path（git）＆＃39;不存在

Question

当我尝试将aleph安装到swiprolog时，我得到的错误如下。我做错了吗？

?- 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] 
......