# W3 A1 |Nbgrader error: \[ValidateApp | INFO\] Validating

**URL:** <https://community.deeplearning.ai/t/w3-a1-nbgrader-error-validateapp-info-validating/216922>\
**Category:** Neural Networks and Deep Learning\
**Tags:** coursera-platform\
**Created:** [October 10, 2022, 12:46pm UTC](https://community.deeplearning.ai/t/w3-a1-nbgrader-error-validateapp-info-validating/216922 "2022-10-10T12:46:43Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![paulinpaloalto](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/paulinpaloalto/32/187_2.png) [@paulinpaloalto](https://community.deeplearning.ai/u/paulinpaloalto)\
**Post date:** [October 10, 2022, 3:39pm UTC](https://community.deeplearning.ai/t/w3-a1-nbgrader-error-validateapp-info-validating/216922/6 "2022-10-10T15:39:34Z")

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The [instructions that are linked](https://community.deeplearning.ai/t/how-to-get-a-clean-copy-of-an-assignment-notebook/73) from the DLS FAQ Thread are complete and cover this issue. That means you did not follow the instructions correctly. The key point is that doing that procedure will only replace files that are _missing_. You must first rename your existing file to get it out of the way. This was covered quite clearly in the instructions.

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_[View the full topic](https://community.deeplearning.ai/t/w3-a1-nbgrader-error-validateapp-info-validating/216922)._