# Attribute error

**URL:** <https://www.ruby-forum.com/t/attribute-error/244399>\
**Category:** GNU Radio\
**Created:** [April 4, 2016, 7:39pm UTC](https://www.ruby-forum.com/t/attribute-error/244399 "2016-04-04T19:39:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\
**Post date:** [April 4, 2016, 7:39pm UTC](https://www.ruby-forum.com/t/attribute-error/244399/1 "2016-04-04T19:39:16Z")

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Hi all,  
I’m trying to create a new block by C++ coding and the coding part seems  
to be alright! Infact my new block appears in GNU radio, but when I  
connect and other blocks and run the GRC flowgraph, an error comes  
namely : "ATTRIBUTE ERROR’. Couls some one tell me what the reason might  
be!  
Please