[erlang-questions] Programming Erlang: Chap 18, Websockets

[7stud]

I'm having trouble running the demos for the ezwebframe.  I installed the old rebar (v. rebar3), but I'm getting the error:

    {badmatch,{error,{not_started,ssl}}

I'm on Mac OSX 10.10.5.  Here is my output:

===========
../ezwebframe-master$ gmake
...
....
Erlang/OTP 19 [erts-8.2] [source] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false]

a simple_demo of websockets....
Load the page http://localhost:1456/ in your browser
Starting:{ok,"/Users/7stud/erlang_programs/ezwebframe/ezwebframe-master/demos"}
Eshell V8.2  (abort with ^G)
1> {"init terminating in do_boot",{{badmatch,{error,{not_started,ssl}}},[{ezwebframe,start_link,2,[{file,"src/ezwebframe.erl"},{line,22}]},{init,start_em,1,[]},{init,do_boot,3,[]}]}}
init terminating in do_boot ()

Crash dump is being written to: erl_crash.dump...done
make[1]: *** [all] Error 1
gmake: *** [Makefile:4: all] Error 2
===========

Thanks for any help is solving this problem!