# \`const\_missing': uninitialized constant CGI::Session (NameEr

**URL:** <https://www.ruby-forum.com/t/const-missing-uninitialized-constant-cgi-session-nameer/178960>\
**Category:** Rails\
**Created:** [November 14, 2009, 7:38am UTC](https://www.ruby-forum.com/t/const-missing-uninitialized-constant-cgi-session-nameer/178960 "2009-11-14T07:38:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![smit\_shah](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/87869e/32.png) [@smit\_shah](https://www.ruby-forum.com/u/smit_shah)\
**Post date:** [November 14, 2009, 7:38am UTC](https://www.ruby-forum.com/t/const-missing-uninitialized-constant-cgi-session-nameer/178960/1 "2009-11-14T07:38:49Z")

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Hi all…

I am facing the following error  
“`const\_missing’: uninitialized constant CGI::Session (NameError)”

While running “script/generate controller abc”

Having any idea???

Thanks all…

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<div class="post-metadata">

**Author:** ![smit\_shah](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/87869e/32.png) [@smit\_shah](https://www.ruby-forum.com/u/smit_shah)\
**Post date:** [November 14, 2009, 10:38am UTC](https://www.ruby-forum.com/t/const-missing-uninitialized-constant-cgi-session-nameer/178960/2 "2009-11-14T10:38:15Z")

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2009/11/14 Smit S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> Hi all…
> 
> I am facing the following error  
> “`const\_missing’: uninitialized constant CGI::Session (NameError)”
> 
> While running “script/generate controller abc”

What have you changed that has made this happen (if anything)? If you  
have upgraded the rails version try googling for const\_missing  
uninitialized constant CGI::Session NameError and you will likely find  
the answer.

If you have not upgraded then googling may find it anyway.

Colin