bootstrap.scss path is wrong in main.scss

An error occurred while After running the grunt task.



$ grunt serve

...

Running "concurrent:server" (concurrent) task
    
    Running "copy:styles" (copy) task
    
    
    Done, without errors.
    
    
    Execution Time (2014-05-10 05:29:26 UTC)
    loading tasks  6ms  ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 38%
    copy:styles    9ms  ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 56%
    Total 16ms
        Warning: Syntax error: File to import not found or unreadable: ../../bower_components/bootstrap-sass-official/vendor/assets/stylesheets/bootstrap.scss.
                  Load paths:
                    /Users/../Projects/sample
                    /Users/../Projects/sample/app/styles
                    /Users/../Projects/sample/bower_components
            on line 4 of app/styles/main.scss
      Use --trace for backtrace. Use --force to continue.
        
        Aborted due to warnings.
    

Execution Time (2014-05-10 05:29:24 UTC)
concurrent:server  1.9s  ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 99%
Total 1.9s

$