Error in .local(.Object, ...) : 
  `/home/httpd/html/dodtmp/6694/NA' does not exist in the file system,
and is not recognised as a supported dataset name.


Error in .rasterObjectFromFile(x, band = band, objecttype = "RasterLayer",  : 
  Cannot create a RasterLayer object from this file. (file does not exist)
Calls: crop ... raster -> raster -> .local -> .rasterObjectFromFile
Execution halted