C# program that uploads files to sharepoint (409) Error when using the Microsoft.SharePoint.Client.File.SaveBinaryDirect

I keep getting 409 sharepoint error.  I dunno why when uploading files. code is below

 using (ClientContext clientContext = new ClientContext(SharePointRootURL())
                    {
                        clientContext.Credentials = GetSharePointCredentials();

                        var thisFileStream = System.IO.File.OpenRead(FilePath);

                        string FileName = System.IO.Path.GetFileName(FilePath);
                       
                        Microsoft.SharePoint.Client.File.SaveBinaryDirect(clientContext, String.Format(SharePointMemberPartnerReportLocation(), MemberPartnerFirmURL) + FileName, thisFileStream, true);
                       
                        thisFileStream.Close();
                    }
cbruneAsked:
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Jamie McAllister MVPSharePoint ConsultantCommented:
Is your code deffo putting a forward slash character between the MemberPartnerFirmURL and the Filename?

Since a 409 is about a rules conflict think about what rules may be being contravened. Are there existing files being overwritten?

http://www.checkupdown.com/status/E409.html
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