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Sample: https://stackblitz.com/edit/angular-taeqay-v7f7mb?file=app.component.ts
Steps:
error details:
TypeError: Cannot read properties of undefined (reading 'getDataByValue')
at QueryBuilderComponent.validateFields (ej2-querybuilder.es2015.js:742:1)
at AddRulesComponent.validateSelection (add-rules.component.ts:265:46)
at AddRulesComponent_div_39_Template_button_click_3_listener (template.html:187:17)
at executeListenerWithErrorHandling (core.js:21860:1)
at wrapListenerIn_markDirtyAndPreventDefault (core.js:21902:1)
at HTMLButtonElement.<anonymous> (platform-browser.js:976:1)
at ZoneDelegate.invokeTask (zone.js:421:35)
at Object.onInvokeTask (core.js:41686:1)
at ZoneDelegate.invokeTask (zone.js:420:40)
at Zone.runTask (zone.js:188:51)