我正在尝试使用git console安装rebar3。我安装了erlang，路径设置为C：\ Program Files \ erl7.3 \ bin 以下是我遵循的步骤：
$ git clone https://github.com/erlang/rebar3.git
$ cd rebar3
$./bootstrap
在点击bootstrap时，我收到以下错误
escript: exception throw: {error,{rebar_prv_update,package_index_write}}
in function rebar_prv_update:do/1 (src/rebar_prv_update.erl, line 77)
in call from rebar_core:do/2 (src/rebar_core.erl, line 125)
in call from erl_eval:do_apply/6 (erl_eval.erl, line 670)
in call from escript:eval_exprs/5 (escript.erl, line 871)
in call from erl_eval:local_func/6 (erl_eval.erl, line 557)
in call from escript:interpret/4 (escript.erl, line 787)
in call from escript:start/1 (escript.erl, line 277)
in call from init:start_it/1 (init.erl, line 1055)
有关如何解决此问题的任何建议？