Warning: ms_newMapObj(): [MapServer Error]: msLoadMap(): (demo.map) in C:\ms4w\apps\ms-ogc-workshop\sld\OGC_SLD_mapfileclasses2sld.php on line 21

Fatal error: Uncaught exception 'MapScriptException' with message 'Failed to open map file "demo.map", or map file error.' in C:\ms4w\apps\ms-ogc-workshop\sld\OGC_SLD_mapfileclasses2sld.php:21 Stack trace: #0 C:\ms4w\apps\ms-ogc-workshop\sld\OGC_SLD_mapfileclasses2sld.php(21): ms_newMapObj('demo.map') #1 {main} thrown in C:\ms4w\apps\ms-ogc-workshop\sld\OGC_SLD_mapfileclasses2sld.php on line 21