# Errors With Canvas

**URL:** <https://discuss.elastic.co/t/errors-with-canvas/164205>\
**Category:** Kibana\
**Created:** [January 14, 2019, 10:30pm UTC](https://discuss.elastic.co/t/errors-with-canvas/164205 "2019-01-14T22:30:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![wwalker](https://avatars.discourse-cdn.com/v4/letter/w/43a26b/32.png) [@wwalker](https://discuss.elastic.co/u/wwalker)\
**Post date:** [January 14, 2019, 10:30pm UTC](https://discuss.elastic.co/t/errors-with-canvas/164205/1 "2019-01-14T22:30:00Z")

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When I choose a data source and click preview, I get one of two errors, depending on the source. If I use TimeLion and I get a `[timelion] > Request failed with status code 502`. If I go with Elasticsearch raw documents, I get `[esdocs] > Unexpected error from Elasticsearch: [unsupported_operation_exception] null`

Is there some kind of setup that's required, is Canvas a paid license feature only?

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**Author:** ![jen-huang](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jen-huang/32/74327_2.png) [@jen-huang](https://discuss.elastic.co/u/jen-huang)\
**Post date:** [January 14, 2019, 11:23pm UTC](https://discuss.elastic.co/t/errors-with-canvas/164205/2 "2019-01-14T23:23:04Z")

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Are you able to access your data in other parts of Kibana normally, for example in Discover and Timelion?

Canvas requires basic (free) license.

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**Author:** ![wwalker](https://avatars.discourse-cdn.com/v4/letter/w/43a26b/32.png) [@wwalker](https://discuss.elastic.co/u/wwalker)\
**Post date:** [January 14, 2019, 11:39pm UTC](https://discuss.elastic.co/t/errors-with-canvas/164205/3 "2019-01-14T23:39:32Z")

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Yes, I've got multiple index patterns that I've built dashboards, and searches on top of. I've got some timelion visualizations as well.

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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:** [February 11, 2019, 11:39pm UTC](https://discuss.elastic.co/t/errors-with-canvas/164205/4 "2019-02-11T23:39:39Z")

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