# Warning: Element can not be null

**URL:** <https://forum.inductiveautomation.com/t/warning-element-can-not-be-null/53417>\
**Category:** Module Development\
**Tags:** perspective\
**Created:** [November 24, 2021, 7:41am UTC](https://forum.inductiveautomation.com/t/warning-element-can-not-be-null/53417 "2021-11-24T07:41:51Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 24, 2021, 4:44pm UTC](https://forum.inductiveautomation.com/t/warning-element-can-not-be-null/53417/2 "2021-11-24T16:44:43Z")

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Are you passing anything you manually encoded (in our quality encoding format) from the frontend to the backend?

This is happening when the backend receives some JSON content and tries to ‘inflate’ it into a property tree structure with associated quality values.

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_[View the full topic](https://forum.inductiveautomation.com/t/warning-element-can-not-be-null/53417)._