CAML query in Sharepoint designer 2010

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C#

CAML

SharePoint2010

Hello, I need help please!
I am developing a website that I need to use the CAML Query Client (java script) in sharepoint designer.
But when I run the query, the same comes back empty.
My Web Application is configured with authentication "Clains based authetication".
When I run in a Web Application with Authentication Mode classic authetication works normally.
I went to see the error log and had this exception:

[10:53:48] System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse (SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke (String methodName, Object [] parameters)
in SPCAMLQueryHelper.SPWSWebs.Webs.GetWebCollection ()
in SPCAMLQueryHelper.WebServiceWork.SiteAndListTreeLoader.Worker ()