# Undefined is not a valid destination type

**URL:** <https://pdfjs.community/t/undefined-is-not-a-valid-destination-type/809>\
**Category:** Technical Support\
**Created:** [June 7, 2021, 9:41am UTC](https://pdfjs.community/t/undefined-is-not-a-valid-destination-type/809 "2021-06-07T09:41:19Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![himani.sharma](https://avatars.discourse-cdn.com/v4/letter/h/e47774/32.png) [@himani.sharma](https://pdfjs.community/u/himani.sharma)\
**Post date:** [June 7, 2021, 9:41am UTC](https://pdfjs.community/t/undefined-is-not-a-valid-destination-type/809/1 "2021-06-07T09:41:19Z")

</div>

**PDF.js Express Version**

**Detailed description of issue**  
{Hello, on uploading a pdf url , pdf js express viewer throwing this error. What does this mean ? }

**Expected behaviour**  
{Provide a screenshot or description of the expected behaviour}

**Does your issue happen with every document, or just one?**  
{Answer here}

**Link to document**  
{[https://www.finelite.com/sites/default/files/2020-09/FL\_HP\_WS\_TS.pdf](https://www.finelite.com/sites/default/files/2020-09/FL_HP_WS_TS.pdf)}

**Code snippet**  
{Provide a relevant code snippet}

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