Magento 2 Class does not exist error

Question

I am trying to create a custom grid in admin, based on customer collection using ui-component.

The problem that I am facing is that I am getting Class does not exist error and magento does not tell which class does not exist :|, and I cannot find anywhere in the code the error in this format.

The code from ui-component

<listing xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd">
 <argument name="data" xsi:type="array">
 <item name="js_config" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing_data_source</item>
 <item name="deps" xsi:type="string">paid_listing.paid_listing_data_source</item>
 </item>
 <item name="spinner" xsi:type="string">paid_columns</item>
 <item name="buttons" xsi:type="array">
 <item name="add" xsi:type="array">
 <item name="name" xsi:type="string">add</item>
 <item name="label" xsi:type="string" translate="true">Add New Customer</item>
 <item name="class" xsi:type="string">primary</item>
 <item name="url" xsi:type="string">*/*/new</item>
 </item>
 </item>
 </argument>
 <dataSource name="paid_listing_data_source">
 <argument name="dataProvider" xsi:type="configurableObject">
 <argument name="class" xsi:type="string">Magento\Customer\Ui\Component\DataProvider</argument>
 <argument name="name" xsi:type="string">paid_listing_data_source</argument>
 <argument name="primaryFieldName" xsi:type="string">entity_id</argument>
 <argument name="requestFieldName" xsi:type="string">id</argument>
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="update_url" xsi:type="url" path="mui/index/render"/>
 </item>
 </argument>
 </argument>
 <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>
 </item>
 </argument>
 </dataSource>
 <container name="listing_top">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="template" xsi:type="string">ui/grid/toolbar</item>
 </item>
 </argument>
 <bookmark name="bookmarks">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="storageConfig" xsi:type="array">
 <item name="namespace" xsi:type="string">paid_listing</item>
 </item>
 </item>
 </argument>
 </bookmark>
 <component name="columns_controls">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="columnsData" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.paid_columns</item>
 </item>
 <item name="component" xsi:type="string">Magento_Ui/js/grid/controls/columns</item>
 <item name="displayArea" xsi:type="string">dataGridActions</item>
 </item>
 </argument>
 </component>
 <exportButton name="export_button">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="selectProvider" xsi:type="string">paid_listing.paid_listing.paid_columns.ids</item>
 <item name="options" xsi:type="array">
 <item name="cvs" xsi:type="array">
 <item name="value" xsi:type="string">csv</item>
 <item name="label" xsi:type="string" translate="true">Export Current Page</item>
 <item name="url" xsi:type="string">mui/export/gridToCsv</item>
 </item>
 <item name="xml" xsi:type="array">
 <item name="value" xsi:type="string">xml</item>
 <item name="label" xsi:type="string" translate="true">Export All</item>
 <item name="url" xsi:type="string">reports_paid/export/gridToCsv</item>
 </item>
 </item>
 </item>
 </argument>
 </exportButton>
 <filterSearch name="fulltext">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing_data_source</item>
 <item name="chipsProvider" xsi:type="string">paid_listing.paid_listing.listing_top.listing_filters_chips</item>
 <item name="storageConfig" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.listing_top.bookmarks</item>
 <item name="namespace" xsi:type="string">current.search</item>
 </item>
 </item>
 </argument>
 </filterSearch>
 <filters name="listing_filters">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="columnsProvider" xsi:type="string">paid_listing.paid_listing.paid_columns</item>
 <item name="storageConfig" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.listing_top.bookmarks</item>
 <item name="namespace" xsi:type="string">current.filters</item>
 </item>
 <item name="childDefaults" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.listing_top.listing_filters</item>
 <item name="imports" xsi:type="array">
 <item name="visible" xsi:type="string">paid_listing.paid_listing.paid_columns.${ $.index }:visible</item>
 </item>
 </item>
 </item>
 </argument>
 </filters>
 <massaction name="listing_massaction">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="selectProvider" xsi:type="string">paid_listing.paid_listing.paid_columns.ids</item>
 <item name="component" xsi:type="string">Magento_Ui/js/grid/tree-massactions</item>
 <item name="indexField" xsi:type="string">entity_id</item>
 </item>
 </argument>
 <action name="delete">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="type" xsi:type="string">delete</item>
 <item name="label" xsi:type="string" translate="true">Delete</item>
 <item name="url" xsi:type="url" path="customer/index/massDelete"/>
 <item name="confirm" xsi:type="array">
 <item name="title" xsi:type="string" translate="true">Delete items</item>
 <item name="message" xsi:type="string" translate="true">Are you sure to delete selected customers?</item>
 </item>
 </item>
 </argument>
 </action>
 <action name="subscribe">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="type" xsi:type="string">subscribe</item>
 <item name="label" xsi:type="string" translate="true">Subscribe to Newsletter</item>
 <item name="url" xsi:type="url" path="customer/index/massSubscribe"/>
 </item>
 </argument>
 </action>
 <action name="unsubscribe">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="type" xsi:type="string">unsubscribe</item>
 <item name="label" xsi:type="string" translate="true">Unsubscribe from Newsletter</item>
 <item name="url" xsi:type="url" path="customer/index/massUnsubscribe"/>
 <item name="confirm" xsi:type="array">
 <item name="title" xsi:type="string" translate="true">Unsubscribe from Newsletter</item>
 <item name="message" xsi:type="string" translate="true">Are you sure to unsubscribe selected customers from newsletter?</item>
 </item>
 </item>
 </argument>
 </action>
 <action name="assign_to_group">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="type" xsi:type="string">assign_to_group</item>
 <item name="label" xsi:type="string" translate="true">Assign a Customer Group</item>
 </item>
 </argument>
 <argument name="actions" xsi:type="configurableObject">
 <argument name="class" xsi:type="string">Magento\Customer\Ui\Component\MassAction\Group\Options</argument>
 <argument name="data" xsi:type="array">
 <item name="urlPath" xsi:type="string">customer/index/massAssignGroup</item>
 <item name="paramName" xsi:type="string">group</item>
 <item name="confirm" xsi:type="array">
 <item name="title" xsi:type="string" translate="true">Assign a Customer Group</item>
 <item name="message" xsi:type="string" translate="true">Are you sure to assign selected customers to new group?</item>
 </item>
 </argument>
 </argument>
 </action>
 <action name="edit">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="type" xsi:type="string">edit</item>
 <item name="label" xsi:type="string" translate="true">Edit</item>
 <item name="callback" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.paid_columns_editor</item>
 <item name="target" xsi:type="string">editSelected</item>
 </item>
 </item>
 </argument>
 </action>
 </massaction>
 <paging name="listing_paging">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="storageConfig" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.listing_top.bookmarks</item>
 <item name="namespace" xsi:type="string">current.paging</item>
 </item>
 <item name="selectProvider" xsi:type="string">paid_listing.paid_listing.paid_columns.ids</item>
 </item>
 </argument>
 </paging>
 </container>
 <!--<columns name="paid_columns" class="Magento\Customer\Ui\Component\Listing\Columns">-->
 <columns name="paid_columns" class="My_Module\CustomerReports\Ui\Component\Listing\Columns">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="storageConfig" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.listing_top.bookmarks</item>
 <item name="namespace" xsi:type="string">current</item>
 </item>
 <item name="editorConfig" xsi:type="array">
 <item name="selectProvider" xsi:type="string">paid_listing.paid_listing.paid_columns.ids</item>
 <item name="enabled" xsi:type="boolean">true</item>
 <item name="indexField" xsi:type="string">entity_id</item>
 <item name="clientConfig" xsi:type="array">
 <item name="saveUrl" xsi:type="url" path="customer/index/inlineEdit"/>
 <item name="validateBeforeSave" xsi:type="boolean">false</item>
 </item>
 </item>
 <item name="childDefaults" xsi:type="array">
 <item name="fieldAction" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.paid_columns_editor</item>
 <item name="target" xsi:type="string">startEdit</item>
 <item name="params" xsi:type="array">
 <item name="0" xsi:type="string">${ $.$data.rowIndex }</item>
 <item name="1" xsi:type="boolean">true</item>
 </item>
 </item>
 <item name="storageConfig" xsi:type="array">
 <item name="provider" xsi:type="string">paid_listing.paid_listing.listing_top.bookmarks</item>
 <item name="root" xsi:type="string">columns.${ $.index }</item>
 <item name="namespace" xsi:type="string">current.${ $.storageConfig.root }</item>
 </item>
 </item>
 </item>
 </argument>
 <selectionsColumn name="ids">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="indexField" xsi:type="string">entity_id</item>
 <item name="sortOrder" xsi:type="number">0</item>
 </item>
 </argument>
 </selectionsColumn>
 <column name="entity_id">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">textRange</item>
 <item name="sorting" xsi:type="string">asc</item>
 <item name="label" xsi:type="string" translate="true">ID</item>
 <item name="sortOrder" xsi:type="number">20</item>
 </item>
 </argument>
 </column>
 <column name="firstname">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">text</item>
 <item name="label" xsi:type="string" translate="true">Firstname</item>
 <item name="editor" xsi:type="string">text</item>
 <item name="sortOrder" xsi:type="number">40</item>
 </item>
 </argument>
 </column>
 <column name="lastname">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">text</item>
 <item name="label" xsi:type="string" translate="true">Lastname</item>
 <item name="editor" xsi:type="string">text</item>
 <item name="sortOrder" xsi:type="number">50</item>
 </item>
 </argument>
 </column>
 <column name="email">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">text</item>
 <item name="editor" xsi:type="string">text</item>
 <item name="label" xsi:type="string" translate="true">Email</item>
 <item name="sortOrder" xsi:type="number">30</item>
 </item>
 </argument>
 </column>
 <column name="group_id">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">select</item>
 <item name="editor" xsi:type="string">select</item>
 <item name="component" xsi:type="string">Magento_Ui/js/grid/columns/select</item>
 <item name="dataType" xsi:type="string">select</item>
 <item name="label" xsi:type="string" translate="true">Group</item>
 <item name="sortOrder" xsi:type="number">90</item>
 </item>
 </argument>
 </column>
 <column name="billing_telephone">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">text</item>
 <item name="editor" xsi:type="string">text</item>
 <item name="label" xsi:type="string" translate="true">Phone</item>
 <item name="sortOrder" xsi:type="number">100</item>
 </item>
 </argument>
 </column>
 <column name="created_at" class="Magento\Ui\Component\Listing\Columns\Date">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">dateRange</item>
 <item name="dataType" xsi:type="string">date</item>
 <item name="component" xsi:type="string">Magento_Ui/js/grid/columns/date</item>
 <item name="label" xsi:type="string" translate="true">Customer Since</item>
 <item name="sortOrder" xsi:type="number">110</item>
 </item>
 </argument>
 </column>
 <column name="last_visit_at" class="Magento\Ui\Component\Listing\Columns\Date">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="component" xsi:type="string">Magento_Ui/js/grid/columns/date</item>
 <item name="filter" xsi:type="string">dateRange</item>
 <item name="visible" xsi:type="boolean">false</item>
 <item name="dataType" xsi:type="string">date</item>
 <item name="label" xsi:type="string" translate="true">Last Logged In</item>
 <item name="sortOrder" xsi:type="number">120</item>
 </item>
 </argument>
 </column>
 <column name="created_in">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="visible" xsi:type="boolean">false</item>
 <item name="label" xsi:type="string" translate="true">Account Created in</item>
 <item name="sortOrder" xsi:type="number">140</item>
 </item>
 </argument>
 </column>
 <column name="kpi_views_customer">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">text</item>
 <item name="label" xsi:type="string" translate="true">Kpi Views</item>
 <item name="sortOrder" xsi:type="number">60</item>
 </item>
 </argument>
 </column>
 <column name="customer_membership">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">text</item>
 <item name="label" xsi:type="string" translate="true">Customer Membership</item>
 <item name="sortOrder" xsi:type="number">70</item>
 </item>
 </argument>
 </column>
 <column name="customer_access">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="filter" xsi:type="string">text</item>
 <item name="label" xsi:type="string" translate="true">Customer Access</item>
 <item name="sortOrder" xsi:type="number">80</item>
 </item>
 </argument>
 </column>
 <actionsColumn name="actions" class="Magento\Customer\Ui\Component\Listing\Column\Actions">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="indexField" xsi:type="string">entity_id</item>
 <item name="sortOrder" xsi:type="number">222</item>
 </item>
 </argument>
 </actionsColumn>
 </columns>
</listing>

Has anyone encountered this type of error ?

Thanks

• Marius: can you add the code from your ui-component file?
• Dragos: Added the code from ui-component
• Marius: Does the class My_Module\CustomerReports\Ui\Component\Listing\Columns exist ?
• Dragos: Yes, the class exists
• Renish Khunt: Hey, please let me know how you resolved this error.

Answer 1

To create a custom grid in the admin panel is necessary add this code in /etc/di.xml to specify the collection.

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
 <virtualType name="Namespace\Module\Model\ResourceModel\YourModel\Grid\Collection" type="Magento\Framework\View\Element\UiComponent\DataProvider\SearchResult">
 <arguments>
 <argument name="mainTable" xsi:type="string">your_main_table</argument>
 <argument name="resourceModel" xsi:type="string">Namespace\Module\Model\ResourceModel\YourResourceModel</argument>
 </arguments>
 </virtualType>
 <type name="Magento\Framework\View\Element\UiComponent\DataProvider\CollectionFactory">
 <arguments>
 <argument name="collections" xsi:type="array">
 <!--data provider name which used in grid ui component file -->
 <item name="paid_listing_data_source" xsi:type="string">Namespace\Module\Model\ResourceModel\YourModel\Grid\Collection</item>
 </argument>
 </arguments>
 </type>
</config>

You can see how your provider data specified paid_listing.paid_listing_data_source is specified in the second type with your grid collection.

• Sarvesh Tiwari: @Rahul Mateos, I tried above code but still i am getting same error. can you help me please
• raumatbel: Hi @ErSarveshVTiwari, sorry for the delay, I has been very busy. Can you specify more the error and your code, please?
• Giordhano: I have the same issue, no more error info :(
• raumatbel: Can you share your code?
• Giordhano: My di.xml gist.github.com/giordhano/52451211ed971a5657cc81e2e7aad48e Listing ui component.xml gist.github.com/giordhano/5ca8f961f9b625338155f6005c846f3a