Hi Guilherme,
Thanks for contacting Syncfusion forums.
This error occurs only if “Syncfusion.Tools.Web”
assembly is not properly referred in your sample application. If assemblies are
referred from GAC then please check the version of the assemblies installed
into the GAC. Please install v9.404.0.62 if it is not available in the GAC. If
the assemblies are referred from Bin folder then please remove the assembly
version details in the Web.Config file.
The following
assemblies need to be referenced in your application for the usage of Essential
Tools Web.
• Syncfusion.Core.dll
• Syncfusion.Shared.Base.dll
• Syncfusion.Shared.Web.dll
• Syncfusion.Tools.Base.dll
• Syncfusion.Tools.Web.dll
Regards,
Varalakshmi