laptop and a wrench

Bug

When adding the List widget from the pending tab to a page in a blank full screen app for small and medium screen sizes, the following error message is returned, "Cannot read property 'children' of undefined."

Last Published: June 23, 2020 ArcGIS Online
Bug ID Number BUG-000131370
SubmittedJune 4, 2020
Last ModifiedAugust 5, 2025
Applies toArcGIS Online
Version found8.1
Operating SystemWindows OS
Operating System Version10.0 64 Bit
Version FixedAGOL 8.3
StatusFixed

Workaround

The error message remains in the Page panel until the user exits out of the ArcGIS Experience Builder editing mode and relaunches the builder.

Steps to Reproduce

Bug ID: BUG-000131370

Software:

  • ArcGIS Online

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