`require': cannot load such file -- erlport/cli (LoadError)

[ilovemysillybanana]

Trying to build this from source leads to the following errors:

jose@devbox:~/export (master *%)$ mix test
/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- erlport/cli (LoadError)
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
	from -e:1:in `<main>'
=ERROR REPORT==== 24-Apr-2019::14:18:50.851078 ===
** Generic server name terminating
** Last message in was {#Port<0.6>,{exit_status,1}}
** When Server state == {state,infinity,0,#Port<0.6>,
                               [{1,
                                 {{<0.177.0>,
                                   #Ref<0.1331792202.2041577475.72287>},
                                  undefined}}],
                               []}
** Reason for termination ==
** {port_closed,{code,1}}

=CRASH REPORT==== 24-Apr-2019::14:18:50.857599 ===
  crasher:
    initial call: erlport:init/1
    pid: <0.178.0>
    registered_name: name
    exception exit: {port_closed,{code,1}}
      in function  gen_server:handle_common_reply/8 (gen_server.erl, line 751)
    ancestors: [<0.177.0>]
    message_queue_len: 1
    messages: [{'EXIT',#Port<0.6>,normal}]
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 2586
    stack_size: 27
    reductions: 4571
  neighbours:



  1) test Ruby.start with name (ExportRubyTest)
     test/export_ruby_test.exs:14
     ** (ErlangError) Erlang error: {:port_closed, {:code, 1}}
     code: result = pid |> Ruby.call("test", "upcase", ["hello"])
     stacktrace:
       (erlport) /export/home/jose/export/deps/erlport/src/erlport.erl:234: :erlport.call/3
       test/export_ruby_test.exs:16: (test)

/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- erlport/cli (LoadError)
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
	from -e:1:in `<main>'
=ERROR REPORT==== 24-Apr-2019::14:18:50.895793 ===
** Generic server name terminating
** Last message in was {#Port<0.8>,{exit_status,1}}
** When Server state == {state,infinity,0,#Port<0.8>,
                               [{1,
                                 {{<0.179.0>,
                                   #Ref<0.1331792202.2041577473.73492>},
                                  undefined}}],
                               []}
** Reason for termination ==
** {port_closed,{code,1}}

=CRASH REPORT==== 24-Apr-2019::14:18:50.896061 ===
  crasher:
    initial call: erlport:init/1
    pid: <0.180.0>
    registered_name: []
    exception exit: {port_closed,{code,1}}
      in function  gen_server:handle_common_reply/8 (gen_server.erl, line 751)
    ancestors: [<0.179.0>]
    message_queue_len: 1
    messages: [{'EXIT',#Port<0.8>,normal}]
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 1598
    stack_size: 27
    reductions: 4485
  neighbours:



  2) test Ruby.start with global name (ExportRubyTest)
     test/export_ruby_test.exs:21
     ** (ErlangError) Erlang error: {:port_closed, {:code, 1}}
     code: result = pid |> Ruby.call("test", "upcase", ["hello"])
     stacktrace:
       (erlport) /export/home/jose/export/deps/erlport/src/erlport.erl:234: :erlport.call/3
       test/export_ruby_test.exs:23: (test)

/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- erlport/cli (LoadError)
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
	from -e:1:in `<main>'
=ERROR REPORT==== 24-Apr-2019::14:18:50.935981 ===
** Generic server <0.182.0> terminating
** Last message in was {#Port<0.10>,{exit_status,1}}
** When Server state == {state,infinity,0,#Port<0.10>,
                               [{1,
                                 {{<0.181.0>,
                                   #Ref<0.1331792202.2041577473.73513>},
                                  undefined}}],
                               []}
** Reason for termination ==
** {port_closed,{code,1}}

=CRASH REPORT==== 24-Apr-2019::14:18:50.936280 ===
  crasher:
    initial call: erlport:init/1
    pid: <0.182.0>
    registered_name: []
    exception exit: {port_closed,{code,1}}
      in function  gen_server:handle_common_reply/8 (gen_server.erl, line 751)
    ancestors: [<0.181.0>]
    message_queue_len: 1
    messages: [{'EXIT',#Port<0.10>,normal}]
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 1598
    stack_size: 27
    reductions: 4463
  neighbours:



  3) test Ruby.start (ExportRubyTest)
     test/export_ruby_test.exs:7
     ** (ErlangError) Erlang error: {:port_closed, {:code, 1}}
     code: result = pid |> Ruby.call("test", "upcase", ["hello"])
     stacktrace:
       (erlport) /export/home/jose/export/deps/erlport/src/erlport.erl:234: :erlport.call/3
       test/export_ruby_test.exs:9: (test)

/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- erlport/cli (LoadError)
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
	from -e:1:in `<main>'
=ERROR REPORT==== 24-Apr-2019::14:18:50.975822 ===
** Generic server <0.184.0> terminating
** Last message in was {#Port<0.12>,{exit_status,1}}
** When Server state == {state,infinity,0,#Port<0.12>,
                               [{1,
                                 {{<0.183.0>,
                                   #Ref<0.1331792202.2041577473.73533>},
                                  undefined}}],
                               []}
** Reason for termination ==
** {port_closed,{code,1}}

=CRASH REPORT==== 24-Apr-2019::14:18:50.976093 ===
  crasher:
    initial call: erlport:init/1
    pid: <0.184.0>
    registered_name: []
    exception exit: {port_closed,{code,1}}
      in function  gen_server:handle_common_reply/8 (gen_server.erl, line 751)
    ancestors: [<0.183.0>]
    message_queue_len: 1
    messages: [{'EXIT',#Port<0.12>,normal}]
    links: []
    dictionary: []
    trap_exit: true
    status: running
    heap_size: 1598
    stack_size: 27
    reductions: 4463
  neighbours:



  4) test Ruby.call macro (ExportRubyTest)
     test/export_ruby_test.exs:28
     ** (ErlangError) Erlang error: {:port_closed, {:code, 1}}
     code: result = pid |> Ruby.call(upcase("hello"), from_file: "test")
     stacktrace:
       (erlport) /export/home/jose/export/deps/erlport/src/erlport.erl:234: :erlport.call/3
       test/export_ruby_test.exs:30: (test)

....

Finished in 0.5 seconds
8 tests, 4 failures

Randomized with seed 743063

System Information
Centos 7 x64
Ruby: ruby 2.0.0p648 (2015-12-16) [x86_64-linux]
Python: Python 3.6.6
I installed both Ruby and Python via the terminal using yum install python ruby

It seems to be complaining about a ruby gem of some kind but it's not available in rubygems website so I have no idea what its looking for. Anyone have an idea?