It’s something weird, but from last week :observer.start is not working in my machine. This is the error that I’m receiving:

Erlang/OTP 20 [RELEASE CANDIDATE 2] [erts-9.0] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:10] [hipe] [kernel-poll:false]

Interactive Elixir (1.4.4) - press Ctrl+C to exit (type h() ENTER for help)

iex(1)> :observer.start

21:52:25.399 [error] WX Failed loading 'wxe_driver'@'/usr/lib/erlang/lib/wx-1.8.1/priv' 

{:error,
 {{:load_driver,
   'symbol _ZThn704_N17wxGenericListCtrl31GetSizeAvailableForScrollTargetERK6wxSize, version WXU_3.0 not defined in file libwx_gtk2u_core-3.0.so.0 with link time reference'},
  [{:wxe_server, :start, 1, [file: 'wxe_server.erl', line: 65]},
   {:wx, :new, 1, [file: 'wx.erl', line: 115]},
   {:observer_wx, :init, 1, [file: 'observer_wx.erl', line: 98]},
   {:wx_object, :init_it, 6, [file: 'wx_object.erl', line: 372]},
   {:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 247]}]}}

I have tried to remove Erlang/Elixir and install it again, but without results. Indeed there are some weird things. For example, Erlang Solutions repository is installing a RC Version of esl-erlang and I don’t know why.

Any help, will be appreciated