Error after upgrading to v3.7

[Doug]

My app worked on v3.6.1 but when I upgraded to v3.7 I'm getting the error below. It has something to do with the TelerikDatePicker. If I remove the date picker it I don't get the error. Any way I can get around this?

 

fail: Microsoft.AspNetCore.Components.Web.ErrorBoundary[0]
      Microsoft.JSInterop.JSException: Cannot read properties of null (reading 'addEventListener')
      TypeError: Cannot read properties of null (reading 'addEventListener')
          at QM.bindEvents (https://localhost:7116/_content/Telerik.UI.for.Blazor/js/telerik-blazor.js:50:1755270)
          at new QM (https://localhost:7116/_content/Telerik.UI.for.Blazor/js/telerik-blazor.js:50:1756185)
          at Zt (https://localhost:7116/_content/Telerik.UI.for.Blazor/js/telerik-blazor.js:50:1029936)
          at Module.tE (https://localhost:7116/_content/Telerik.UI.for.Blazor/js/telerik-blazor.js:50:1756262)
          at https://localhost:7116/_framework/blazor.webassembly.js:1:3332
          at new Promise (<anonymous>)
          at Object.beginInvokeJSFromDotNet (https://localhost:7116/_framework/blazor.webassembly.js:1:3306)
          at Object.St [as invokeJSFromDotNet] (https://localhost:7116/_framework/blazor.webassembly.js:1:59938)
          at _mono_wasm_invoke_js_blazor (https://localhost:7116/_framework/dotnet..oafyft2lng.js:9073:37)
          at do_icall (wasm://wasm/031ebc56:wasm-function[3582]:0xc1359)
         at Microsoft.JSInterop.JSRuntime.<InvokeAsync>d__16`1[[Microsoft.JSInterop.Infrastructure.IJSVoidResult, Microsoft.JSInterop, Version=6.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]].MoveNext()
         at Microsoft.JSInterop.JSRuntimeExtensions.InvokeVoidAsync(IJSRuntime jsRuntime, String identifier, Object[] args)
         at Telerik.Blazor.Components.Common.Pickers.TelerikPickerBase`1.<InitPicker>d__119[[System.DateTime, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
         at Telerik.Blazor.Components.Common.Pickers.TelerikPickerBase`1.<OnAfterRenderAsync>d__115[[System.DateTime, System.Private.CoreLib, Version=6.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].MoveNext()
         at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

[Doug]

The other day I upgraded to v3.7 and got errors, created the forum entry above and then downgraded to v3.6.1. I have since been working on unrelated things and just now when I went back to do a little more testing with this issue I upgraded back to v3.7 and it seems to be working now. So I have no idea what happened there but I guess it's good.

[Dimo]

Hello Doug,

Probably a caching issue.

Regards,
Dimo
Progress Telerik

[Saurabh]

Hello Doug,

 

I am facing similar issue after upgrading UI for Blazor to 6.0.2 from 4.4.0.

Any other solution?

 

Note- I am also switching from .net core 6.0 to net core 8.0

[Dimo]

@Saurabh - if the information in the addEventListener KB article does not help you and the error persists even after you have cleared the browser cache and rebuilt the app, please send a stripped (but runnable) version of your app for inspection.