# Unexpected Error grading on Module 4 assigment on the Data with SQL on the Data I/O and Preprocessing with Python and SQL course

**URL:** <https://community.deeplearning.ai/t/unexpected-error-grading-on-module-4-assigment-on-the-data-with-sql-on-the-data-i-o-and-preprocessing-with-python-and-sql-course/890384>\
**Category:** Data I/O and Processing with Python and SQL\
**Tags:** week-module-4, coursera-platform\
**Created:** [March 16, 2026, 8:22am UTC](https://community.deeplearning.ai/t/unexpected-error-grading-on-module-4-assigment-on-the-data-with-sql-on-the-data-i-o-and-preprocessing-with-python-and-sql-course/890384 "2026-03-16T08:22:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Maialen](https://avatars.discourse-cdn.com/v4/letter/m/f08c70/32.png) [@Maialen](https://community.deeplearning.ai/u/Maialen)\
**Post date:** [March 16, 2026, 8:22am UTC](https://community.deeplearning.ai/t/unexpected-error-grading-on-module-4-assigment-on-the-data-with-sql-on-the-data-i-o-and-preprocessing-with-python-and-sql-course/890384/1 "2026-03-16T08:22:05Z")

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I am currently doing the **DeepLearning.AI Data Analytics,** which contains 5 different courses. On the fourth one, called **Data I/O and Preprocessing with Python and SQL,** I have been having a problem with the grading on the Module 4 Assignment: Deeper Analysis of the Movie Data with SQL. It does not correct any of my answers and it’s been a week since I reported the issue and tried fixing it. All the answers are the same as the output requiered, I have not programmed nothing outside the start and end code here, updated the lab, reboot the server and hand it different notebooks and still the assigment is not been graded.

 ![image](https://global.discourse-cdn.com/dlai/original/3X/f/9/f9357c46541dcede11351e1379cc94789baa02e2.png)

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**Author:** ![chris.favila](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/chris.favila/32/126338_2.png) [@chris.favila](https://community.deeplearning.ai/u/chris.favila)\
**Post date:** [March 16, 2026, 8:49am UTC](https://community.deeplearning.ai/t/unexpected-error-grading-on-module-4-assigment-on-the-data-with-sql-on-the-data-i-o-and-preprocessing-with-python-and-sql-course/890384/2 "2026-03-16T08:49:26Z")

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Hi! Can you send me your notebook via direct message? You can click my name then the blue Message button. Thanks.

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**Author:** ![chris.favila](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/chris.favila/32/126338_2.png) [@chris.favila](https://community.deeplearning.ai/u/chris.favila)\
**Post date:** [March 16, 2026, 3:27pm UTC](https://community.deeplearning.ai/t/unexpected-error-grading-on-module-4-assigment-on-the-data-with-sql-on-the-data-i-o-and-preprocessing-with-python-and-sql-course/890384/3 "2026-03-16T15:27:43Z")

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Hi. That indicates that the grader is timing out. After running your notebook, I observe that exercise 7 and 8 just hangs. If the code is correct, it should have finished running in under a minute. Please check your solution. You can refer to the hints in the notebook, as well as related exercises in the lectures/practice labs to guide you. Once you match the expected output there, the grader will also give you the perfect score. Hope this helps.