JavaScript error when loading razor page with multiple components

i get the following exception when debugging a Blazor WebAssembly app.

I am using the Syncfusion.Blazor NuGet package ver 32.1.23. I believe this is a recent regression.

The page that is loading has a number of Compnents on it and I cannot tell which is causing this error.

These components are on the page:  

SfDashboardLayout

DashboardLayoutPanel

SfChart

SfDropDownList

SfAccumulationChart


Error: Could not find 'sfBlazor.getCharSizeByFontKeys' ('getCharSizeByFontKeys' was undefined).

Stack trace:

 > at https://localhost:7151/_framework/blazor.webassembly.js:1:384

 > at Array.forEach (<anonymous>)

 > at l.findFunction (https://localhost:7151/_framework/blazor.webassembly.js:1:352)

 > at E (https://localhost:7151/_framework/blazor.webassembly.js:1:5101)

 > at https://localhost:7151/_framework/blazor.webassembly.js:1:2894

 > at new Promise (<anonymous>)

 > at v.beginInvokeJSFromDotNet (https://localhost:7151/_framework/blazor.webassembly.js:1:2857)

 > at Object.Zt [as invokeJSJson] (https://localhost:7151/_framework/blazor.webassembly.js:1:56051)

 > at https://localhost:7151/_framework/dotnet.runtime.hv7sykez1z.js:3:33880

 > at Fc (https://localhost:7151/_framework/dotnet.runtime.hv7sykez1z.js:3:172344)


1 Reply

DG Durga Gopalakrishnan Syncfusion Team February 23, 2026 12:13 PM UTC

Hi Geoff,


Greetings from Syncfusion.


We have tested your reported scenario by rendering a Chart, Accumulation Chart, and DropDownList inside the Dashboard Layout control. Unfortunately, we were unable to reproduce the script error on our end. For your reference, we have attached the tested sample and a screenshot.



Sample : https://blazorplayground.syncfusion.com/rjrnDrVKTBclQXBh


To help us investigate this issue further, we kindly request the following information:

  • Please check whether the issue can be reproduced using the above sample.
  • Share a minimal reproducible sample where the issue occurs.
  • Provide a video recording demonstrating the problem.
  • A screenshot or copy of the browser console error.
  • Confirm whether you are using Syncfusion individual NuGet packages or the Syncfusion Blazor common NuGet.
  • Browser used for testing.
  • Whether the issue occurs only in Dashboard Layout or in other containers as well.
  • Whether rendering the component dynamically.


Kindly let us know if you have any further concerns.


Regards,

Durga Gopalakrishnan.


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