homebrew - wxmac elixir error when trying to run :observer.start in iex

Question

After running :observer.start in iex I received the follwing messages. I tried uninstalling and reinstalling both Elixir and Homebrew but to no avail.

objc[58977]: Class wxNSProgressIndicator is implemented in both /usr/local/Cellar/wxmac/3.0.5.1_1/lib/libwx_osx_cocoau_core-3.0.0.5.0.dylib (0x1f5e9fc0) and /usr/local/opt/wxmac/lib/libwx_osx_cocoau_core-3.0.dylib (0x1ef61fc0). One of the two will be used. Which one is undefined.

objc[58977]: Class wxNSTableDataSource is implemented in both /usr/local/Cellar/wxmac/3.0.5.1_1/lib/libwx_osx_cocoau_core-3.0.0.5.0.dylib (0x1f5ea038) and /usr/local/opt/wxmac/lib/libwx_osxzsh: segmentation fault

question from:https://stackoverflow.com/questions/65648857/wxmac-elixir-error-when-trying-to-run-observer-start-in-iex

Answer 1

Observer uses WXwidgets to render the window and the controls on your platform. As the error suggests you have 2 installations, not sure how you handle such errors on mac but I suppose deleting one of the versions will solve the error.

To make your life easier, there is now a new option to run observer in browser called Phoenix Live Dashboard that does not require any local renderer dependencies installed.