# Importing canvas workpads via saved-objects API results in internal server error **URL:** \ **Category:** Kibana\ **Tags:** canvas\ **Created:** [September 17, 2019, 2:09pm UTC](https://discuss.elastic.co/t/importing-canvas-workpads-via-saved-objects-api-results-in-internal-server-error/199837 "2019-09-17T14:09:36Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![tarkin67](https://avatars.discourse-cdn.com/v4/letter/t/8797f3/32.png) [@tarkin67](https://discuss.elastic.co/u/tarkin67)\ **Post date:** [September 17, 2019, 2:09pm UTC](https://discuss.elastic.co/t/importing-canvas-workpads-via-saved-objects-api-results-in-internal-server-error/199837/1 "2019-09-17T14:09:36Z")
Hi all, I am running into an issue with importing canvas workpads via the saved-objects API. We have implemented a script that fetches saved objects via "/api/saved\_objects". The script fetches kibana dashboards, visualizations, index patterns and canvas workpads. This works fine, there are no problems and we get a list of JSON files representing the fetched saved objects. For populating an empty kibana instance, these JSON files are then again posted to the saved-objects API. This works perfectly fine for all the saved objects except for the canvas workpads: The POST request for the workpads succeeds and they are then shown in the canvas workpad list. However, when clicking a workpad, kibana displays that an internal server error occurred and does not open the workpad: ![image](https://us1.discourse-cdn.com/elastic/original/3X/8/3/83f6042492375f4cb1f847abf6bcdff2aca56a55.png) In the kibana server log the following error gets spammed: ``` error [14:00:16.933] [warning][stats-collection] TypeError: Cannot read property 'length' of undefined at length (C:\dev\Software\elastic\kibana-7.3.1-windows-x86_64\x-pack\legacy\plugins\canvas\server\usage/workpad_collector.js:51:92) at Array.reduce () at reduce (C:\dev\Software\elastic\kibana-7.3.1-windows-x86_64\x-pack\legacy\plugins\canvas\server\usage/workpad_collector.js:51:41) at Array.map () at map (C:\dev\Software\elastic\kibana-7.3.1-windows-x86_64\x-pack\legacy\plugins\canvas\server\usage/workpad_collector.js:37:36) at summarizeWorkpads (C:\dev\Software\elastic\kibana-7.3.1-windows-x86_64\x-pack\legacy\plugins\canvas\server\usage/workpad_collector.js:158:12) at process._tickCallback (internal/process/next_tick.js:68:7) log [14:00:16.956] [warning][stats-collection] Unable to fetch data from canvas collector ``` The obtained JSON for the workpad is the following: ``` { "id": "workpad-d4fd2982-2301-4aca-b341-e2d683f94f86", "type": "canvas-workpad", "updated_at": "2019-09-17T13:49:52.305Z", "version": "WzI2MCwyXQ==", "attributes": { "name": "test", "width": 1080, "height": 720, "css": ".canvasPage {\n\n}", "page": 0, "pages": [ { "id": "page-3d6133cd-7077-4775-9042-e532b463107f", "style": { "background": "#FFF" }, "transition": { }, "elements": [ { "id": "element-4852d2bf-393f-4874-811e-b5309d8a6d6e", "position": { "left": 20, "top": 20, "width": 700, "height": 300, "angle": 0 }, "expression": "filters\n| demodata\n| pointseries x=\"project\" y=\"sum(price)\" color=\"state\" size=\"size(username)\"\n| plot defaultStyle={seriesStyle points=5 fill=1}\n| render" } ], "groups": [ ] } ], "colors": [ "#37988d", "#c19628", "#b83c6f", "#3f9939", "#1785b0", "#ca5f35", "#45bdb0", "#f2bc33", "#e74b8b", "#4fbf48", "#1ea6dc", "#fd7643", "#72cec3", "#f5cc5d", "#ec77a8", "#7acf74", "#4cbce4", "#fd986f", "#a1ded7", "#f8dd91", "#f2a4c5", "#a6dfa2", "#86d2ed", "#fdba9f", "#000000", "#444444", "#777777", "#BBBBBB", "#FFFFFF", "rgba(255,255,255,0)" ], "isWriteable": true, "assets": { }, "@timestamp": "2019-09-17T13:49:52.253Z", "@created": "2019-09-17T13:49:45.304Z" }, "references": [ ], "migrationVersion": { "canvas-workpad": "7.0.0" } } ``` What exactly is breaking here, and what would be the correct way to fetch canvas workpads via the saved-objects API? Thanks and regards ---
**Author:** ![bhavyarm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bhavyarm/32/22392_2.png) [@bhavyarm](https://discuss.elastic.co/u/bhavyarm)\ **Post date:** [September 17, 2019, 2:25pm UTC](https://discuss.elastic.co/t/importing-canvas-workpads-via-saved-objects-api-results-in-internal-server-error/199837/2 "2019-09-17T14:25:22Z")
That looks like a bug: can you please log it here? [https://github.com/elastic/kibana/issues](https://github.com/elastic/kibana/issues) Thanks, Bhavya ---
**Author:** ![tarkin67](https://avatars.discourse-cdn.com/v4/letter/t/8797f3/32.png) [@tarkin67](https://discuss.elastic.co/u/tarkin67)\ **Post date:** [September 17, 2019, 2:52pm UTC](https://discuss.elastic.co/t/importing-canvas-workpads-via-saved-objects-api-results-in-internal-server-error/199837/3 "2019-09-17T14:52:08Z")
Hi @bhavyarm Thank you for the quick reply, I have created [this](https://github.com/elastic/kibana/issues/45901) issue over on github. Kind regards ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 15, 2019, 3:01pm UTC](https://discuss.elastic.co/t/importing-canvas-workpads-via-saved-objects-api-results-in-internal-server-error/199837/4 "2019-10-15T15:01:37Z")
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