# Encountered scope-end without corresponding head!

**URL:** <https://forum.knime.com/t/encountered-scope-end-without-corresponding-head/87874>\
**Category:** KNIME Analytics Platform\
**Created:** [May 5, 2025, 6:58am UTC](https://forum.knime.com/t/encountered-scope-end-without-corresponding-head/87874 "2025-05-05T06:58:36Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![nikhil\_benny](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/n/db5fbb/32.png) [@nikhil\_benny](https://forum.knime.com/u/nikhil_benny)\
**Post date:** [May 5, 2025, 6:58am UTC](https://forum.knime.com/t/encountered-scope-end-without-corresponding-head/87874/1 "2025-05-05T06:58:36Z")

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Hi, I encountered this error while using try and catch block:  
Encountered scope-end without corresponding head!

I understand the error usually occurs around loops in knime. I’ve enclosed my entire workflow, including the loop, into the component and yet I face this error. Please refer the attachment ss of the workflow. I appreciate any suggestions and solution. Thanks in advance.

 ![workflow](https://forum-cdn.knime.com/uploads/default/original/3X/6/1/611a2fb885125b2d427cddfc722d1c34e1d20ace.jpeg)  
 ![component](https://forum-cdn.knime.com/uploads/default/original/3X/9/9/9943bda22565ed08fc9f1331a950f6ecbe9ea8c0.jpeg)

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**Author:** ![HansS](https://forum-cdn.knime.com/user_avatar/forum.knime.com/hanss/32/6979_2.png) [@HansS](https://forum.knime.com/u/HansS)\
**Post date:** [May 5, 2025, 7:51am UTC](https://forum.knime.com/t/encountered-scope-end-without-corresponding-head/87874/2 "2025-05-05T07:51:17Z")

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Hi @nikhil_benny

You said

> [@nikhil\_benny](#):
>
> while using try and catch block:

But where is your Try node?

See more examples:

> **[Error Handling with Try-Catch – knime](https://hub.knime.com/knime/spaces/Education/Educational%20Videos%20Demo%20Workflows/Error%20Handling%20with%20Try-Catch~MYGfeUM2m0B6wHX4/current-state)**
>
> Error Handling with Try-Catch This workflow demonstrates how to handle errors with the Try-Catch structure. In this example, the new contracts data are read fr…

gr. Hans

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**Author:** ![mlauber71](https://forum-cdn.knime.com/user_avatar/forum.knime.com/mlauber71/32/73590_2.png) [@mlauber71](https://forum.knime.com/u/mlauber71)\
**Post date:** [May 5, 2025, 7:51am UTC](https://forum.knime.com/t/encountered-scope-end-without-corresponding-head/87874/3 "2025-05-05T07:51:37Z")

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@nikhil_benny you will have to use a start and an end to capture errors. You can read about this here - and also find some examples to follow.

> **[KNIME — Cases, Switches and Catching Errors](https://medium.com/low-code-for-advanced-data-science/knime-cases-switches-and-catching-errors-5ab748cbeaa3)**
>
> An overview of the key capabilities for workflow control

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**Author:** ![nikhil\_benny](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/n/db5fbb/32.png) [@nikhil\_benny](https://forum.knime.com/u/nikhil_benny)\
**Post date:** [May 5, 2025, 11:31am UTC](https://forum.knime.com/t/encountered-scope-end-without-corresponding-head/87874/4 "2025-05-05T11:31:29Z")

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This is embarrassing, but yeah, I missed the try node 🥲

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**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\
**Post date:** [May 12, 2025, 11:31am UTC](https://forum.knime.com/t/encountered-scope-end-without-corresponding-head/87874/5 "2025-05-12T11:31:34Z")

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