# C4W4A1 grader issue. dev.deftunes\_transform tables output **URL:** \ **Category:** Data Modeling, Transformation, and Serving\ **Tags:** week-module-4, coursera-platform\ **Created:** [January 8, 2026, 5:53pm UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577 "2026-01-08T17:53:32Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![George\_Salgueiro](https://avatars.discourse-cdn.com/v4/letter/g/ad7895/32.png) [@George\_Salgueiro](https://community.deeplearning.ai/u/George_Salgueiro)\ **Post date:** [January 8, 2026, 5:53pm UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/1 "2026-01-08T17:53:32Z")
Can’t get this field graded correctly and since is not asked to modify the glue job files, i don’t know what to do. Should i fill the form to get a fresh lab, since i had issues with internet connectivity that may have affected the grader? ### **dev.deftunes\_transform tables output** Failed test case: Incorrect output in ‘ex02’: Number of lines do not match. Expected: 34 lines, but got: 54 lines. All the other graded tests are ok. ---
**Author:** ![Bobbyc32](https://avatars.discourse-cdn.com/v4/letter/b/7bcc69/32.png) [@Bobbyc32](https://community.deeplearning.ai/u/Bobbyc32)\ **Post date:** [January 12, 2026, 2:31am UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/2 "2026-01-12T02:31:25Z")
I am having the same issue. Very Frustrating. 1/11 and still having the issue ---
**Author:** ![nitinpv](https://avatars.discourse-cdn.com/v4/letter/n/bbce88/32.png) [@nitinpv](https://community.deeplearning.ai/u/nitinpv)\ **Post date:** [January 17, 2026, 8:30am UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/3 "2026-01-17T08:30:04Z")
same issue any fix? ---
**Author:** ![nitinpv](https://avatars.discourse-cdn.com/v4/letter/n/bbce88/32.png) [@nitinpv](https://community.deeplearning.ai/u/nitinpv)\ **Post date:** [January 17, 2026, 8:31am UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/4 "2026-01-17T08:31:50Z")
There was a problem loading the file ‘credentials’. Details: [Errno 2] No such file or directory: ‘/shared/submission/credentials’ ---
**Author:** ![MaxMantei](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@MaxMantei](https://community.deeplearning.ai/u/MaxMantei)\ **Post date:** [February 6, 2026, 10:34am UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/5 "2026-02-06T10:34:03Z")
I’m having this issue too. Seeing no activity on this here is a bit disappointing. ---
**Author:** ![juliak](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/juliak/32/144119_2.png) [@juliak](https://community.deeplearning.ai/u/juliak)\ **Post date:** [February 6, 2026, 2:25pm UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/6 "2026-02-06T14:25:25Z")
> [@nitinpv](#): > > [Errno 2] No such file or directory: ‘/shared/submission/credentials’ @MaxMantei by “this issue” do you mean “credentials not found”? [Errno 2] No such file or directory: ‘/shared/submission/credentials’ It’s a common issue. Usually recommendation is to restart the lab. Have you tried restarting? ---
**Author:** ![MaxMantei](https://avatars.discourse-cdn.com/v4/letter/m/8edcca/32.png) [@MaxMantei](https://community.deeplearning.ai/u/MaxMantei)\ **Post date:** [February 6, 2026, 2:44pm UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/7 "2026-02-06T14:44:57Z")
No, I meant the issue in the original post: Failed test case: Incorrect output in ‘ex02’: Number of lines do not match. Expected: 34 lines, but got: 54 lines. ---
**Author:** ![CheeHaw](https://avatars.discourse-cdn.com/v4/letter/c/b5e925/32.png) [@CheeHaw](https://community.deeplearning.ai/u/CheeHaw)\ **Post date:** [February 22, 2026, 3:13am UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/8 "2026-02-22T03:13:41Z")
Hi, I having the same issue also, there’s happened with no reason, there might be some issue in the grading part or source database. Could someone please look at it urgently? ![image](https://global.discourse-cdn.com/dlai/original/3X/9/a/9a9e762b7a63840ca06936dba1be9cd81e358550.png) ---
**Author:** ![lfo](https://avatars.discourse-cdn.com/v4/letter/l/3ab097/32.png) [@lfo](https://community.deeplearning.ai/u/lfo)\ **Post date:** [February 25, 2026, 3:00pm UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/9 "2026-02-25T15:00:34Z")
That is also happening to me and it is the only error I could not solve. I don’t understand how were expected 34 lines if we only get 3. Nonetheless, if that is the only mistake, we can get 80/100 and move on. ---
**Author:** ![namgiang](https://avatars.discourse-cdn.com/v4/letter/n/ed655f/32.png) [@namgiang](https://community.deeplearning.ai/u/namgiang)\ **Post date:** [March 23, 2026, 2:37am UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/10 "2026-03-23T02:37:39Z")
![image](https://global.discourse-cdn.com/dlai/original/3X/e/c/ec3dfc9daaea828841254c32435b8a7ee5a33524.png) ![image](https://global.discourse-cdn.com/dlai/original/3X/6/d/6d32d65679ef2565ebd9a0e1d2a649711df66be4.png) I’m experiencing the same issue, along with another problem. I followed all the lab instructions, but the grader still fails. Could anyone please help clarify whether this might be an issue with my implementation or with the lab/grader? ---
**Author:** ![jpablo2292](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/jpablo2292/32/127723_2.png) [@jpablo2292](https://community.deeplearning.ai/u/jpablo2292)\ **Post date:** [May 27, 2026, 6:06pm UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/11 "2026-05-27T18:06:56Z")
Hi, I’m having the same issue: ![image](https://global.discourse-cdn.com/dlai/original/3X/0/4/04dd40ceaf282be20300aa46370c7b52aad16bca.png) Guess they haven’t fixed the grader yet 😕 ---
**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:** [May 27, 2026, 7:22pm UTC](https://community.deeplearning.ai/t/c4w4a1-grader-issue-dev-deftunes-transform-tables-output/886577/12 "2026-05-27T19:22:52Z")
I recommend you start a new topic for this issue. This one has been cold for several months. A new topic is more likely to attract attention from the course mentors or staff.