# Problem with PDF READER

**URL:** <https://forum.gumloop.com/t/problem-with-pdf-reader/1658>\
**Category:** Get Help\
**Tags:** Extract-Data\
**Created:** [March 3, 2025, 9:02pm UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658 "2025-03-03T21:02:56Z")\
**Posts on this page:** 13\
**Page:** 1

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**Author:** ![Richard](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Richard](https://forum.gumloop.com/u/Richard)\
**Post date:** [March 3, 2025, 9:02pm UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/1 "2025-03-03T21:02:56Z")

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[https://www.gumloop.com/pipeline?workbook\_id=prQPcwtRRtf5PBkBD535jX&run\_id=ZBK5yDcfokrfgiGuudEJVG](https://www.gumloop.com/pipeline?workbook_id=prQPcwtRRtf5PBkBD535jX&run_id=ZBK5yDcfokrfgiGuudEJVG)

I can’t get this to run

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<div class="post-metadata">

**Author:** ![Gumloop\_Bot](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.gumloop.com/gumloop_bot/32/504_2.png) [@Gumloop\_Bot](https://forum.gumloop.com/u/Gumloop_Bot)\
**Post date:** [March 3, 2025, 9:02pm UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/2 "2025-03-03T21:02:59Z")

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Hey @Richard! If you’re reporting an issue with a flow or an error in a run, please include the **run link** and make sure it’s **shareable** so we can take a look.

1. **Find your run link** on the history page. Format: `https://www.gumloop.com/pipeline?run_id={your_run_id}&workbook_id={workbook_id}`

2. **Make it shareable** by clicking **“Share”** in the top-left corner of the flow screen.  
 ![GIF guide](https://canada1.discourse-cdn.com/flex027/uploads/gumloop/original/1X/92c00c612fd65b861e706dd1b5eec5ec61677835.gif)

3. **Provide details** about the issue—more context helps us troubleshoot faster.

You can find your run history here: [https://www.gumloop.com/history](https://www.gumloop.com/history)

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<div class="post-metadata">

**Author:** ![Richard](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Richard](https://forum.gumloop.com/u/Richard)\
**Post date:** [March 3, 2025, 9:05pm UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/3 "2025-03-03T21:05:33Z")

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yes, have shared the link

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**Author:** ![Wasay-Gumloop](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.gumloop.com/wasay-gumloop/32/69_2.png) [@Wasay-Gumloop](https://forum.gumloop.com/u/Wasay-Gumloop)\
**Post date:** [March 4, 2025, 1:56am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/4 "2025-03-04T01:56:55Z")

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Hey @Richard - You seem to be passing text inputs from your CSV into the `File` input of the `PDF Reader` node. The `File` input needs to be a valid PDF file.

 ![Screenshot 2025-03-04 at 6.55.55 AM](https://canada1.discourse-cdn.com/flex027/uploads/gumloop/original/1X/493e35794d250b6c940393b293e64259fd161cf8.png)

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<div class="post-metadata">

**Author:** ![Richard](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Richard](https://forum.gumloop.com/u/Richard)\
**Post date:** [March 4, 2025, 3:19am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/5 "2025-03-04T03:19:32Z")

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Hi Wasya, thanks for getting back to me.  
I’m not sure I’ve got the “flow” right then. (The Mech Specification is a PDF?)  
In a “flow” we are trying to read a pdf mechanical specification, and search for assets listed in the specification, and then give us a list of all the assets that match the assets in the CSV file.  
Hoping this makes sense 🙂

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<div class="post-metadata">

**Author:** ![Richard](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Richard](https://forum.gumloop.com/u/Richard)\
**Post date:** [March 4, 2025, 3:24am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/6 "2025-03-04T03:24:54Z")

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i.e. can you search the mechanical specification for these 3x things:  
1 “Single and multi-zone air handling units”  
2. “Operating theatre air handling systems”  
3. “Ducted fan coil units”  
And then extract a list of any of the 3 assets above, or hopefully it finds all 3 asset above.

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<div class="post-metadata">

**Author:** ![Wasay-Gumloop](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.gumloop.com/wasay-gumloop/32/69_2.png) [@Wasay-Gumloop](https://forum.gumloop.com/u/Wasay-Gumloop)\
**Post date:** [March 4, 2025, 4:04am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/7 "2025-03-04T04:04:42Z")

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I see but you still need to pass the PDF file for that. The CSV just outputs text/string which is =/= file.

Here’s a guided tutorial that will help: [https://www.gumloop.com/pipeline?workbook\_id=oSHnXmMiS4dVBc1L4CmLjk&tutorial=true&guided\_tutorial\_id=document\_processing](https://www.gumloop.com/pipeline?workbook_id=oSHnXmMiS4dVBc1L4CmLjk&tutorial=true&guided_tutorial_id=document_processing)

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<div class="post-metadata">

**Author:** ![Richard](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Richard](https://forum.gumloop.com/u/Richard)\
**Post date:** [March 4, 2025, 5:16am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/8 "2025-03-04T05:16:05Z")

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![image](https://canada1.discourse-cdn.com/flex027/uploads/gumloop/original/1X/06f73aa321fca17e1c05ac5304a41b3576b12eeb.jpeg)

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<div class="post-metadata">

**Author:** ![Richard](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Richard](https://forum.gumloop.com/u/Richard)\
**Post date:** [March 4, 2025, 5:18am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/9 "2025-03-04T05:18:04Z")

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Thanks Wasay. Do you have a “similar” template or “flow” that might work for this diagram above?

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<div class="post-metadata">

**Author:** ![Wasay-Gumloop](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.gumloop.com/wasay-gumloop/32/69_2.png) [@Wasay-Gumloop](https://forum.gumloop.com/u/Wasay-Gumloop)\
**Post date:** [March 4, 2025, 5:19am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/10 "2025-03-04T05:19:45Z")

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The guided tutorial above would be a great place to start. We also have a few document processing templates you can use for inspiration: [https://www.gumloop.com/templates](https://www.gumloop.com/templates)

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<div class="post-metadata">

**Author:** ![Richard](https://avatars.discourse-cdn.com/v4/letter/r/f0a364/32.png) [@Richard](https://forum.gumloop.com/u/Richard)\
**Post date:** [March 4, 2025, 5:52am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/11 "2025-03-04T05:52:21Z")

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I’m missing a step, based on what i’m trying to do, any thoughts to get it to run?

[https://www.gumloop.com/pipeline?run\_id=b2KNV8Xbs6ZvfLQRuFZEiq&workbook\_id=prQPcwtRRtf5PBkBD535jX](https://www.gumloop.com/pipeline?run_id=b2KNV8Xbs6ZvfLQRuFZEiq&workbook_id=prQPcwtRRtf5PBkBD535jX)

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<div class="post-metadata">

**Author:** ![Wasay-Gumloop](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.gumloop.com/wasay-gumloop/32/69_2.png) [@Wasay-Gumloop](https://forum.gumloop.com/u/Wasay-Gumloop)\
**Post date:** [March 4, 2025, 5:59am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/12 "2025-03-04T05:59:18Z")

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You need to join the `List` output of the CSV Reader node: [https://www.gumloop.com/pipeline?workbook\_id=vgWfo2XgtXbG3VCV747e56](https://www.gumloop.com/pipeline?workbook_id=vgWfo2XgtXbG3VCV747e56)

- [https://docs.gumloop.com/common\_errors/type\_mismatch](https://docs.gumloop.com/common_errors/type_mismatch)
- [https://docs.gumloop.com/common\_errors/list\_size\_mismatch](https://docs.gumloop.com/common_errors/list_size_mismatch)

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<div class="post-metadata">

**Author:** ![system](https://canada1.discourse-cdn.com/flex027/uploads/gumloop/original/1X/d02ff8efcde6ac5d3ac8aa0376137d5f804da549.png) [@system](https://forum.gumloop.com/u/system)\
**Post date:** [March 9, 2025, 5:59am UTC](https://forum.gumloop.com/t/problem-with-pdf-reader/1658/13 "2025-03-09T05:59:23Z")

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