It means that whatever object you are trying to use the method
relative_url_root on is nil so therefore no method exists. Check to make
sure in your code that the object you are passing in actually exists.
file_column is quite ancient by plugin standards - you may want to
look into using a more modern replacement. Otherwise, you’ll need to
post the full stack trace, as the error alone isn’t particularly
helpful.
–Matt J.
This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.