# Error while running ruby script/server

**URL:** <https://discuss.rubyonrails.org/t/error-while-running-ruby-script-server/21272>\
**Category:** rubyonrails-talk\
**Created:** [December 5, 2007, 5:27am UTC](https://discuss.rubyonrails.org/t/error-while-running-ruby-script-server/21272 "2007-12-05T05:27:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![William\_Pratt](https://avatars.discourse-cdn.com/v4/letter/w/9dc877/32.png) [@William\_Pratt](https://discuss.rubyonrails.org/u/William_Pratt)\
**Post date:** [December 5, 2007, 5:27am UTC](https://discuss.rubyonrails.org/t/error-while-running-ruby-script-server/21272/1 "2007-12-05T05:27:58Z")

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Did you use a tab instead of spaces? YAML doesn't like tabs.

-Bill

Syed Rizvi wrote: