# Postman Student expert , Test collection visualize not working and one test failing **URL:** \ **Category:** Help Hub\ **Tags:** tests, request\ **Created:** [November 24, 2021, 9:13am UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017 "2021-11-24T09:13:39Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![cryosat-geoscientis7](https://avatars.discourse-cdn.com/v4/letter/c/96bed5/32.png) [@cryosat-geoscientis7](https://community.postman.com/u/cryosat-geoscientis7)\ **Post date:** [November 24, 2021, 9:13am UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/1 "2021-11-24T09:13:39Z")
i am currently doing student expert program, i am very close to finishing the course, however i am getting this error, ![2021-11-24 (1)](https://us1.discourse-cdn.com/getpostman/original/3X/2/4/248de20c784e4d133f1b8972f53f1d52bd83bd0e.png) `Set env variable from script and set next request | AssertionError: expected [] to have a length above 0 but got 0` i have followed the steps as mentioned in the body. the visualiser is also not displaying anything the environment variable is getting assigned, and the next request is also set ![2021-11-24 (2)](https://us1.discourse-cdn.com/getpostman/original/3X/f/f/ffdc0ccd009dd9fc434fa384dd672795988d5345.png) ![2021-11-24 (3)](https://us1.discourse-cdn.com/getpostman/original/3X/b/d/bdbd2a10ddf0934d0fb5d6ad1ece4aa6970e69e1.png) i would really apreciate it if someone could guide me through what i am doing wrong ---
**Author:** ![cmnazario](https://sea2.discourse-cdn.com/getpostman/user_avatar/community.postman.com/cmnazario/32/10207_2.png) [@cmnazario](https://community.postman.com/u/cmnazario)\ **Post date:** [November 24, 2021, 5:53pm UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/2 "2021-11-24T17:53:44Z")
Hello @cryosat-geoscientis7 Welcome to our community 😊 🥳 You can print “Authorization” from the “Skill check” request from the “3. Check Progress” folder, so that I can help you better 😁 ---
**Author:** ![cryosat-geoscientis7](https://avatars.discourse-cdn.com/v4/letter/c/96bed5/32.png) [@cryosat-geoscientis7](https://community.postman.com/u/cryosat-geoscientis7)\ **Post date:** [November 25, 2021, 1:38am UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/3 "2021-11-25T01:38:33Z")
hello,i have printed the api key in the console, and it showing in the console, so is “Authorization” ---
**Author:** ![cmnazario](https://sea2.discourse-cdn.com/getpostman/user_avatar/community.postman.com/cmnazario/32/10207_2.png) [@cmnazario](https://community.postman.com/u/cmnazario)\ **Post date:** [November 25, 2021, 1:58am UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/4 "2021-11-25T01:58:21Z")
Hey @cryosat-geoscientis7 Are the “Key” and “Value” values ​​in single quotes like in the image? 👇 ![Aspas](https://us1.discourse-cdn.com/getpostman/original/3X/b/7/b7f2dfa79d54872ce2a5cc51f7a72fc14b8f35f7.png) If they are with single quotes, remove them, generate a new link from the collection and validate again, I had a similar problem and the problem was the single quotes 😅 Let me know if it works 😉 ---
**Author:** ![cryosat-geoscientis7](https://avatars.discourse-cdn.com/v4/letter/c/96bed5/32.png) [@cryosat-geoscientis7](https://community.postman.com/u/cryosat-geoscientis7)\ **Post date:** [November 25, 2021, 3:30am UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/6 "2021-11-25T03:30:32Z")
it worked! thank you so much ---
**Author:** ![cryosat-geoscientis7](https://avatars.discourse-cdn.com/v4/letter/c/96bed5/32.png) [@cryosat-geoscientis7](https://community.postman.com/u/cryosat-geoscientis7)\ **Post date:** [November 25, 2021, 4:29am UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/7 "2021-11-25T04:29:20Z")
how do i submit the work done though 😅…the visualiser is not working in Test Collections ---
**Author:** ![cmnazario](https://sea2.discourse-cdn.com/getpostman/user_avatar/community.postman.com/cmnazario/32/10207_2.png) [@cmnazario](https://community.postman.com/u/cmnazario)\ **Post date:** [November 25, 2021, 12:23pm UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/8 "2021-11-25T12:23:30Z")
I’m glad I helped 🥰 The submission of the work performed is sent by completing this form 👇 > **[Postman Student Expert Submission](https://docs.google.com/forms/d/e/1FAIpQLSd8hAvZbw0oJtrg-3u6B5E1kDcDzm7cZeKVvG2L0Eo4_HnGPg/viewform)** > > Add your collection link to the form to request your Postman Student Expert certification! > > Make sure you have worked through the Student Expert template in Postman, completed the requests, and that your tests have passed. > > If there are any issues... ---
**Author:** ![cryosat-geoscientis7](https://avatars.discourse-cdn.com/v4/letter/c/96bed5/32.png) [@cryosat-geoscientis7](https://community.postman.com/u/cryosat-geoscientis7)\ **Post date:** [November 25, 2021, 2:51pm UTC](https://community.postman.com/t/postman-student-expert-test-collection-visualize-not-working-and-one-test-failing/30017/9 "2021-11-25T14:51:05Z")
thank you so much! 😄