# Difficulties / Bugs with Canvas

**URL:** <https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422>\
**Category:** Kibana\
**Tags:** canvas\
**Created:** [February 21, 2020, 5:01pm UTC](https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422 "2020-02-21T17:01:41Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Rob\_wylde](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rob_wylde/32/58231_2.png) [@Rob\_wylde](https://discuss.elastic.co/u/Rob_wylde)\
**Post date:** [February 21, 2020, 5:01pm UTC](https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422/1 "2020-02-21T17:01:41Z")

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Good morning,

I'm currently experiencing 2 issues with my 7.6.0 ECE install but my issues are specific to Kibana.

1. When I try and print a workpad to pdf. Only a single page is printed to pdf.  
You can repo this by simply opening a new template and trying to print to pdf. Expected result is for all pages to be included but I only get a single page. If i add the post url to a watcher i'll get what seems like a random single page being outputted.

2. I try and upload an image to my assets and even though only 3% of space is being used i get an error.  
`The server gave a response that the workpad data was too large. This usually means uploaded image assets that are too large for Kibana or a proxy.`  
This file is 535kb and i've been able to successfully add it to another workpad.

\*\* Seems the limitation is 500kb but i do not know where to alter that limitation. \*\*

Overall Canvas seems kind of flaky I get different results when trying to do the same thing with different workpads.

Thanks

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**Author:** ![tsullivan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tsullivan/32/31077_2.png) [@tsullivan](https://discuss.elastic.co/u/tsullivan)\
**Post date:** [February 24, 2020, 7:37pm UTC](https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422/2 "2020-02-24T19:37:35Z")

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> [@Rob\_wylde](#):
>
> - When I try and print a workpad to pdf. Only a single page is printed to pdf.  
> You can repo this by simply opening a new template and trying to print to pdf. Expected result is for all pages to be included but I only get a single page. If i add the post url to a watcher i'll get what seems like a random single page being outputted.

Hi, this is a known issue and it will be fixed in 7.6.1: [[Reporting] Fix screenshot pipeline for multi-page by tsullivan · Pull Request #56928 · elastic/kibana · GitHub](https://github.com/elastic/kibana/pull/56928) (It was totally my fault too - sorry about that!)

> [@Rob\_wylde](#):
>
> I try and upload an image to my assets and even though only 3% of space is being used i get an error.  
> `The server gave a response that the workpad data was too large. This usually means uploaded image assets that are too large for Kibana or a proxy.`  
> This file is 535kb and i've been able to successfully add it to another workpad.

Whenever you make any changes to the workpad, the entire workpad gets re-uploaded to Elasticsearch for auto-saving. Canvas maintains the workpad as a single string of JSON, with the images converted to base64 format.

It sounds like the overall size of the workpad is pretty high for Elasticsearch, or a proxy server in front of Elasticsearch. Elasticsearch has a setting to limit the size of HTTP payloads at `http.max_content_length`: [HTTP | Elasticsearch Guide [8.11] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-http.html)

If the size of the workpad isn't hitting the ES size limit, it could be hitting a limit of a 3rd party proxy server in front of Elasticsearch.

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**Author:** ![Rob\_wylde](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rob_wylde/32/58231_2.png) [@Rob\_wylde](https://discuss.elastic.co/u/Rob_wylde)\
**Post date:** [February 25, 2020, 7:52pm UTC](https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422/3 "2020-02-25T19:52:58Z")

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Any idea on when 7.6.1 will get released? I will review my reverse proxy configuration but I'm only using 4% of the allocated space for a canvas project.

Thanks for your honesty

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**Author:** ![tsullivan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tsullivan/32/31077_2.png) [@tsullivan](https://discuss.elastic.co/u/tsullivan)\
**Post date:** [March 5, 2020, 11:08pm UTC](https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422/4 "2020-03-05T23:08:38Z")

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Hi, Kibana 7.6.1 was just released yesterday

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<div class="post-metadata">

**Author:** ![Rob\_wylde](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rob_wylde/32/58231_2.png) [@Rob\_wylde](https://discuss.elastic.co/u/Rob_wylde)\
**Post date:** [March 6, 2020, 12:43am UTC](https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422/5 "2020-03-06T00:43:56Z")

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Can confirm the PDF generation issue is resolved in 7.6.1

Thanks for following up on this thread.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 3, 2020, 12:45am UTC](https://discuss.elastic.co/t/difficulties-bugs-with-canvas/220422/6 "2020-04-03T00:45:46Z")

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