read XML work in editor but not in final build

hello, using this code in the editor i can read the xml file (located in the project folder). In the build the file is not read

What's wrong?

 import System.Xml;
 
 var Filename="gamexml.xml";
 
 var test="Hello"; 
 
     function Start()
     
     {
        
 var reader:XmlReader = XmlReader.Create(Filename);
 
   while(reader.Read())  {
              if(reader.IsStartElement("TestUp"))  {
                 test=reader.GetAttribute("Test");
               }         
         }
      }
  

here's the output_log of the build

 GfxDevice: creating device client; threaded=1
 Direct3D:
     Version:  Direct3D 9.0c [aticfx64.dll 8.17.10.1140]
     Renderer: ATI Radeon HD 5800 Series
     Vendor:   ATI
     VRAM:     1010 MB (via DXGI)
     Caps:     Shader=30 DepthRT=1 NativeDepth=1 NativeShadow=1 DF16=1 DF24=1 INTZ=1 RAWZ=0 NULL=1 RESZ=1 SlowINTZ=1
 <I> Initializing (RawInput).
 
 <RI> Input initialized.
 
 desktop: 1680x1050 60Hz; virtual: 3360x1050 at 0,0
 Begin MonoManager ReloadAssembly
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\UnityEngine.dll (this message is harmless)
 Loading C:\Users\Pc\Desktop\try\231012\try_Data\Managed\UnityEngine.dll into Unity Child Domain
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-CSharp-firstpass.dll (this message is harmless)
 Loading C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-CSharp-firstpass.dll into Unity Child Domain
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-CSharp.dll (this message is harmless)
 Loading C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-CSharp.dll into Unity Child Domain
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-UnityScript-firstpass.dll (this message is harmless)
 Loading C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-UnityScript-firstpass.dll into Unity Child Domain
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-UnityScript.dll (this message is harmless)
 Loading C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Assembly-UnityScript.dll into Unity Child Domain
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\System.Xml.dll (this message is harmless)
 Loading C:\Users\Pc\Desktop\try\231012\try_Data\Managed\System.Xml.dll into Unity Child Domain
 - Completed reload, in  0.105 seconds
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\UnityScript.Lang.dll (this message is harmless)
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\Boo.Lang.dll (this message is harmless)
 The referenced script on this Behaviour is missing!
  
 (Filename: C:/BuildAgent/work/b0bcff80449a48aa/Runtime/Mono/MonoBehaviour.cpp Line: 1576)
 
 The class defined in script file named 'ExcelReader' does not match the file name!
  
 (Filename: C:/BuildAgent/work/b0bcff80449a48aa/Runtime/Mono/MonoBehaviour.cpp Line: 1482)
 
 Platform assembly: C:\Users\Pc\Desktop\try\231012\try_Data\Managed\System.dll (this message is harmless)
 SecurityException: file:// URIs not allowed
   at System.Xml.XmlUrlResolver.GetEntity (System.Uri absoluteUri, System.String role, System.Type ofObjectToReturn) [0x00000] in <filename unknown>:0 
 
   at Mono.Xml2.XmlTextReader.GetStreamFromUrl (System.String url, System.String& absoluteUriString) [0x00000] in <filename unknown>:0 
 
   at Mono.Xml2.XmlTextReader..ctor (Boolean dummy, System.Xml.XmlResolver resolver, System.String url, XmlNodeType fragType, System.Xml.XmlParserContext context) [0x00000] in <filename unknown>:0 
 
   at System.Xml.XmlTextReader..ctor (Boolean dummy, System.Xml.XmlResolver resolver, System.String url, XmlNodeType fragType, System.Xml.XmlParserContext context) [0x00000] in <filename unknown>:0 
 
   at System.Xml.XmlReader.Create (System.String url, System.Xml.XmlReaderSettings settings, System.Xml.XmlParserContext context) [0x00000] in <filename unknown>:0 
 
   at System.Xml.XmlReader.Create (System.String url, System.Xml.XmlReaderSettings settings) [0x00000] in <filename unknown>:0 
 
   at System.Xml.XmlReader.Create (System.String url) [0x00000] in <filename unknown>:0 
 
   at ReadXML.Start () [0x00000] in <filename unknown>:0 
  
 (Filename:  Line: -1)
 
 FormatException: Unknown char: N
   at System.Double.Parse (System.String s, NumberStyles style, IFormatProvider provider) [0x00000] in <filename unknown>:0 
 
   at System.Single.Parse (System.String s) [0x00000] in <filename unknown>:0 
 
   at UnityScript.Lang.UnityBuiltins.parseFloat (System.String value) [0x00000] in <filename unknown>:0 
 
   at profondita+$Start$37+$.MoveNext () [0x00000] in <filename unknown>:0 
  
 (Filename:  Line: -1)
 
 Running as server. Player ID is 0.
  
 (Filename: C:/BuildAgent/work/b0bcff80449a48aa/Runtime/Network/NetworkManager.cpp Line: 2479)
 

i noticed this error

" SecurityException: file:// URIs not allowed"

How to solve?