# Introduction to Generative AI for Software Development module 3 assignment c1m3 subnitting error

**URL:** <https://community.deeplearning.ai/t/introduction-to-generative-ai-for-software-development-module-3-assignment-c1m3-subnitting-error/888218>\
**Category:** Introduction to Generative AI for Software Develop\
**Tags:** week-module-3, dl-ai-learning-platform\
**Created:** [February 3, 2026, 6:10am UTC](https://community.deeplearning.ai/t/introduction-to-generative-ai-for-software-development-module-3-assignment-c1m3-subnitting-error/888218 "2026-02-03T06:10:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Erkan\_Yucekaya](https://avatars.discourse-cdn.com/v4/letter/e/8e8cbc/32.png) [@Erkan\_Yucekaya](https://community.deeplearning.ai/u/Erkan_Yucekaya)\
**Post date:** [February 3, 2026, 6:10am UTC](https://community.deeplearning.ai/t/introduction-to-generative-ai-for-software-development-module-3-assignment-c1m3-subnitting-error/888218/1 "2026-02-03T06:10:37Z")

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I am in Introduction to Generative AI for Software Development module 3

when I am submitting C1M3 “building a travel and flight optimazation applicaiton” I get error as

**“An unexpected error occurred. Please try again later”**

Although I have passed all tests , I did several times and with differents browsers, the result is the same, so that I can not get my certifcaiton too.

So can you help me ?

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**Author:** ![TMosh](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/tmosh/32/9321_2.png) [@TMosh](https://community.deeplearning.ai/u/TMosh)\
**Post date:** [February 3, 2026, 6:39am UTC](https://community.deeplearning.ai/t/introduction-to-generative-ai-for-software-development-module-3-assignment-c1m3-subnitting-error/888218/2 "2026-02-03T06:39:59Z")

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Please follow this thread, it’s about the same assignment.

> [@Question about the C1M3 assignment](https://community.deeplearning.ai/t/question-about-the-c1m3-assignment/888148):
>
> I have a question about the C1M3 assignment: [Generative AI for Software Development - DeepLearning.AI](https://learn.deeplearning.ai/specializations/generative-ai-for-software-development/lesson/99qmtu/building-a-travel-%26-flight-optimization-app) . I have completed the assignment and achieved the expected results, but I cannot submit it. I have tried to submit it multiple times since yesterday, but it still fails with the following message: An unexpected error occurred. Please try again later. Exercise 1 0/75 No feedback available for this exercise. Exercise 2 0/25 No feedback available for this exercise. However, both assignment…

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**Author:** ![TMosh](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/tmosh/32/9321_2.png) [@TMosh](https://community.deeplearning.ai/u/TMosh)\
**Post date:** [February 3, 2026, 6:40am UTC](https://community.deeplearning.ai/t/introduction-to-generative-ai-for-software-development-module-3-assignment-c1m3-subnitting-error/888218/3 "2026-02-03T06:40:03Z")

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