Ubuntu 20.04.1 LTS: ERROR: Could not find 'wxe_driver.so'

Question

maxximiliann@Maxximiliann:$ iex -S mix
Erlang/OTP 22 [erts-10.7.1] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:1] [

Interactive Elixir (1.10.3) - press Ctrl+C to exit (type h() ENTER for help)


iex(1)> :observer.start

12:45:30.511 [error] ERROR: Could not find 'wxe_driver.so' in: /home/maxximiliann/.asdf/installs/erlang/22.3.3/lib/wx-1.9/priv

{:error,
{{:load_driver, 'No driver found'},
[ 
{: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: 107]},
{:wx_object, :init_it, 6, [file: 'wx_object.erl', line: 372]},
{:proc_lib, :init_p_do_apply, 3, [file: 'proc_lib.erl', line: 249]}
]}}

These instructions were followed to install erlang-wx on this Ubuntu machine:

Operating System: Ubuntu 20.04.1 LTS
Kernel: Linux 5.4.0-48-generic
Architecture: x86-64

What else is required to get observer to run?

Answer 1

The erlang-wx package is only used by the Erlang installed through Ubuntu packages, but yours was built with asdf. When you asked asdf to build Erlang, it presumably printed this:

 * wx             : wxWidgets not found, wx will NOT be usable

To fix that, install the package libwxgtk3.0-gtk3-dev, and then remove and reinstall the asdf Erlang installation.

Answer 2

Resharing what solved my problem: :observer.start is not working on Ubuntu answer is from rogerweb

• OS: Ubuntu 20.04.4 LTS Focal
• Elixir: 1.13.0
• Erlang/OTP 25 [erts-13.0.3]

Solution:

sudo apt install libwxgtk-webview3.0-gtk3-0v5