# Error when running heat equation example

**URL:** <https://fenicsproject.discourse.group/t/error-when-running-heat-equation-example/7250>\
**Category:** Errors\
**Created:** [December 6, 2021, 11:15am UTC](https://fenicsproject.discourse.group/t/error-when-running-heat-equation-example/7250 "2021-12-06T11:15:23Z")\
**Posts on this page:** 1\
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**Author:** ![dokken](https://yyz2.discourse-cdn.com/free1/user_avatar/fenicsproject.discourse.group/dokken/32/1560_2.png) [@dokken](https://fenicsproject.discourse.group/u/dokken)\
**Post date:** [December 6, 2021, 11:45am UTC](https://fenicsproject.discourse.group/t/error-when-running-heat-equation-example/7250/2 "2021-12-06T11:45:32Z")

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The tutorial is based on the 2016 release of dolfin. The api has changed since then, and should be `u.vector().get_local()`  
There are several other references to the modern framework, see for instance: [Is there an updated reference for beginners? - #2 by dokken](https://fenicsproject.discourse.group/t/is-there-an-updated-reference-for-beginners/4899/2)

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