Ruby on Rails - unable to convert "\x89" from ASCII-8BIT to UTF-8 for xxx/xxxx/xxxx

Question

I am installing ruby on rails 4.0.0 on my linux system , but i am getting this kind of errors unable to convert "\x89" from ASCII-8BIT to UTF8 for guides/assets/images/getting_started/routing_error_no_route_matches.png, skipping and many similar errors , i read here that it won't cause any effect ,but i do not understand why it is coming . Any pointers?

Answer 1

You need to update / install a version of the rdoc gem that supports the conversion. Then these errors won't appear during generation of the documentation when you install rails or when you regenerate the documentation.

gem install rdoc

Then to regenerate the documentation

gem rdoc --all --overwrite

Answer 2

Set such environment variables before you do install:

export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8