[Solved] PDV Viewer: mI is not a function

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Danielle
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Danielle asked on 11 Feb 2026, 04:22 PM

When adding a PDFViewer component, I get this error:

jQuery.Deferred exception: mI is not a function TypeError: mI is not a function

  at DV.loadDocument (http://localhost:56126/lib/kendo-ui/js/kendo.all.min.js:9:4666164)
    at DV.loadFile (http://localhost:56126/lib/kendo-ui/js/kendo.all.min.js:9:4666007)
    at new DV (http://localhost:56126/lib/kendo-ui/js/kendo.all.min.js:9:4660492)
    at init._loadPdfJSDocument (http://localhost:56126/lib/kendo-ui/js/kendo.all.min.js:9:4725966)
    at new init (http://localhost:56126/lib/kendo-ui/js/kendo.all.min.js:9:4710755)
    at HTMLDivElement.<anonymous> (http://localhost:56126/lib/kendo-ui/js/kendo.all.min.js:9:66968)
    at ce.each (http://localhost:56126/js/jquery-3.7.0.min.js:2:3129)
    at ce.fn.init.each (http://localhost:56126/js/jquery-3.7.0.min.js:2:1594)
    at e.fn.<computed> [as kendoPDFViewer] (http://localhost:56126/lib/kendo-ui/js/kendo.all.min.js:9:66944)
    at HTMLDocument.<anonymous> (http://localhost:56126/MyFolder/MyPage?ticketid=11:703:100) undefined

This occurs whether I use a valid PDF file on initial load, or if I use the menu to open and test an existing document.

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Danielle
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answered on 19 Feb 2026, 02:55 PM

We were finally able  to get this working through a series of trial and error, rearranging the order of the scripts and whether or not they were marked as "modules". 

This is the order that worked and did not cause new license errors

Thank you for your help!

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Eyup
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answered on 13 Feb 2026, 07:11 PM

Hello Danielle,

 

Thank you for reaching out.

To resolve this issue, please try to use pdf.js files converted to UMD. You can find ready to use files and the full explanation here:
https://www.telerik.com/forums/license-errors-when-displaying-a-chart-and-a-pdf-viewer-on-the-same-page 


Let me know if you find the explanations in the post helpful.

 

Regards,
Eyup
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