# Simple\_captcha problem

**URL:** <https://www.ruby-forum.com/t/simple-captcha-problem/142361>\
**Category:** Rails\
**Created:** [July 7, 2008, 10:09am UTC](https://www.ruby-forum.com/t/simple-captcha-problem/142361 "2008-07-07T10:09:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sadeesh\_kumar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/439d5e/32.png) [@sadeesh\_kumar](https://www.ruby-forum.com/u/sadeesh_kumar)\
**Post date:** [July 7, 2008, 10:09am UTC](https://www.ruby-forum.com/t/simple-captcha-problem/142361/1 "2008-07-07T10:09:32Z")

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Hi,  
I am using simple\_captcha plugin. It works well. But after  
sometime, throwing error “undefined method find\_by\_key”. If I restart  
my mongrel, the problem gets fixed and after sometime the same problem  
appears again. Could anyone explain what the real problem is.

Thanks,  
-Sadeesh kumar.