I am get an error when the pdf viewer is loading

[Henry Wokhwera]

System.Collections.Generic.KeyNotFoundException: 'The given key was not present in the dictionary.' that is the error I get

[Akshaya Arivoli]

Hi Henry , 

Thank you for contacting Syncfusion support. 

We are unbale to reproduce the reported issue with the provided details. We have shared simple PDF Viewer sample in which we have tried in the below link, 

https://www.syncfusion.com/downloads/support/forum/156619/ze/EJ2PdfViewer_(7)1843563532  

Note: 

Ensure to use both client and server side packages of same version  

Use the updated controller code  

Please try it and revert us with more details about your issue, PDF document, modified sample, console errors if you are still facing the issue. These details will be helpful for us to investigate further and assist you better. 

Regards, 

Akshaya