-1, Microsoft.SharePoint.Client.InvalidClientQueryExceptionThe expression "web/GetFileByServerRelativeUrl('/sites/gefportal/PMISGEFDocuments/Climate Change/Botswana - (6937) - Botswana's Third National Communication (TNC) to t/ID6937__Resubmission_5316_TNC_BUR_Botswana_EA_request_19Nov2014.pdf')/$Value" is not valid.