unity www request not working,Cannot load texture from php file

Hi everyone, I moved my project from 2017.1 to 2018. I'm loading textures from php server dynamically, it works on 2017 but not on 2018. here is my code @Aurimas-Cernius
string URL = "http://randomserver/test.php"; void Start () { StartCoroutine ("getTextures");

     }
  IEnumerator getTextures(){
         using (WWW www = new WWW(URL))
         {
             yield return www;
 
             if (www.error != null)
             {
 
                 Debug.Log("Error Loading Ads");
             }
             else
             {
                 string downlo = www.text;
                 string[] desTextSplit = downlo.Split('\r');
              
    
                Debug.Log(desTextSplit[1]); /// IT RETURNS IMAGE URL CORRECTLY
 
                 WWW wwwLo = new WWW(desTextSplit[1]);
                 while (!wwwLo.isDone)
                 {
                     Debug.Log("Download image on progress" + wwwLo.progress);
                     yield return null;
                 }
                 if (!string.IsNullOrEmpty(wwwLo.error))
                 {
                     Debug.Log("Download failed" + wwwLo.error); // ERROR Cannot connect to destination
                 }
                 else
                 {
                     Debug.Log("Download succes");
                     Texture2D texO;
                     texO = new Texture2D(1, 1);
 
                     yield return wwwLo;
                     texO.LoadImage(wwwLo.bytes);
                     texO.Apply();
                     Texture tt = wwwLo.texture;
        
                   
                     One.texture = texO;
                 }
  
             }
         }
     }
 

this code still works on 2017. please help me