iTextSharp Error: Script control 'UpdateProgress1' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors()

Hello everyone,

I followed the follwing link to convert asp.net webpage to PDF.

I am getting the below error while trying to convert asp.net webpage to pdf using iTextSharp HTML to PDF Lib.

https://www.aspsnippets.com/Articles/Export-ASPNet-Web-Page-with-images-to-PDF-using-ITextsharp.aspx

Script control 'UpdateProgress1' is not a registered script control. Script controls must be registered using RegisterScriptControl() before calling RegisterScriptDescriptors().

Request you to help me

Thanks