Error with first request only

Alex_mex · April 15

Hi everybody, I have a strange error:

1. First I'm connecting to RAD Server and do login (TEMSProvider and TBackendAuth):

EMSProvider1.UserName := Edit1.Text;
EMSProvider1.Password := Edit2.Text;
BackendAuth1.UserName := Edit1.Text;
BackendAuth1.Password := Edit2.Text;
try
    BackendAuth1.Login;
    Memo1.Lines.Add('Logged in');
except
    on E: Exception do Memo1.Lines.Add(E.message);
end;

Login always is successfull

2. Then I'm trying to do request using TBackendEndpoint

    try
      RecentStudiesEP.ClearBody;
      RecentStudiesEP.Params.Clear;

RecentStudiesEP.Resource := 'Studies';

RecentStudiesEP.ResourceSuffix := DateToIso8601(Now,TRUE);

      RecentStudiesEP.Params.AddItem('DoctorID','455BAC0D-87B3-4D2B-9740-E0B46C65BA82');
      RecentStudiesEP.Execute;
      {Do something}
    except
      on E : exception do
             begin
               Memo1.Lines.Add(e.Message);
             end;
    end;

On the first request I'm always getting an error: EMS Error: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-str

But after that everythig starts to work fine without any errors, the same request does not give any problem and I can use it whenever I want and without any error

What it can be? Where is an error? And how to fix it?

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Error with first request only

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