Note: This is not a duplicate of any similar error

I have found a strange bug in Magento 2. It shows the following error in the browser's console for only restricted admin user (the user which has not full rights of the admin panel).

Uncaught TypeError: Cannot read property 'items' of null
    at UiClass.onRequestComplete (data-storage.js:270)
    at fire (jquery.js:3232)
    at Object.fireWith [as resolveWith] (jquery.js:3362)
    at done (jquery.js:9840)
    at XMLHttpRequest.callback (jquery.js:10311)

Console Error

To replicate the issue, follow the process below:

  • Login to the backend with a user with full backend permission.
  • Create a new user role from System >> User Roles with Custom Resource Access. For example, select only the Dashboard from the resources list. (You can choose any other)

Create role

  • After creating the role, create a new admin user with the role which you created in the previous step.
  • Login to the backend with new user's login credentials in another browser or after logging out the current user.
  • Open the browser's console and check the error mentioned above.

Note: I have noticed the same error from Magento versions 2.2.4 to 2.2.7.

  • hi @Mohit, did you get the solution for this issue? I am also facing the same Commented May 6, 2019 at 11:45
  • No @jafar-pinjar, not yet. Commented May 7, 2019 at 4:29
  • hi @Mohit, any temporary fix u did? or any suggestions to avoid this Commented May 7, 2019 at 6:12
  • have you installed any custom modules related to orders? Commented May 7, 2019 at 6:56
  • No, actually my question is not related to orders. I am having this error on every page in the backend for any restricted user. Commented May 7, 2019 at 6:59

2 Answers 2


after adding resource 'Basic Configuration Section' under 'Stores->Settings->Configuration', My local loaded fine.

enter image description here

  • Thanks, @jonas-chen for sharing the solution. Commented Aug 27, 2019 at 4:42
  • Did you resolve the issue ? Commented Oct 21, 2020 at 5:42

This may not be issue for new Magento version but M2.x and M3.X has issue: change data source format to below:

<dataSource name="listing_data_source">
    <argument name="dataProvider" xsi:type="configurableObject">
        <argument name="class" xsi:type="string">Magento\Framework\View\Element\UiComponent\DataProvider\DataProvider</argument>
        <argument name="name" xsi:type="string">listing_data_source</argument>
        <argument name="primaryFieldName" xsi:type="string">id</argument>
        <argument name="requestFieldName" xsi:type="string">id</argument>
        <argument name="data" xsi:type="array">
            <item name="config" xsi:type="array">
                <item name="storageConfig" xsi:type="array">
                    <item name="indexField" xsi:type="string">id</item>
                <item name="update_url" xsi:type="url" path="mui/index/render"/>
    <argument name="data" xsi:type="array">
        <item name="js_config" xsi:type="array">
            <item name="component" xsi:type="string">Magento_Ui/js/grid/provider</item>

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