-1, Microsoft.SharePoint.Client.InvalidClientQueryExceptionThe expression "web/GetFileByServerRelativeUrl('/sites/gefportal/PMISGEFDocuments/Climate Change/China - (5582) - ASTUD- Jiangxi Ji'an Sustainable Urban Transport P/2.Draft_RRP_PRC_Jiangxi_Jian_SUT_30Apr14.pdf')/$Value" is not valid.