Mac app - icon not showing correctly / corrupted / distorted

I have taken care twice to have all the correct permissions in my Images.xcassets, but still my AppIcon is confusing:

What could be causing this?

These are the files I used:

large-icon.png PNG 128x128 128x128+0+0 8-bit sRGB 2.45KB 0.000u 0:00.009
large-icon@2x.png[1] PNG 256x256 256x256+0+0 8-bit sRGB 4.52KB 0.000u 0:00.000
larger-icon.png[2] PNG 256x256 256x256+0+0 8-bit sRGB 4.52KB 0.000u 0:00.000
larger-icon@2x.png[3] PNG 512x512 512x512+0+0 8-bit sRGB 9.23KB 0.000u 0:00.000
largest-icon.png[4] PNG 512x512 512x512+0+0 8-bit sRGB 9.23KB 0.000u 0:00.000
largest-icon@2x.png[5] PNG 1024x1024 1024x1024+0+0 8-bit sRGB 22.3KB 0.000u 0:00.000
medium-icon.png[6] PNG 32x32 32x32+0+0 8-bit sRGB 874B 0.000u 0:00.000
medium-icon@2x.png[7] PNG 64x64 64x64+0+0 8-bit sRGB 1.52KB 0.000u 0:00.000
small-icon.png[8] PNG 16x16 16x16+0+0 8-bit sRGB 480B 0.000u 0:00.000
small-icon@2x.png[9] PNG 32x32 32x32+0+0 8-bit sRGB 874B 0.000u 0:00.009

      

        
        
        
      

    

This is the content of the Images.xcassets / AppIcon.appiconset / Contents.json file:

{
  "images" : [
    {
      "size" : "16x16",
      "idiom" : "mac",
      "filename" : "small-icon.png",
      "scale" : "1x"
    },
    {
      "size" : "16x16",
      "idiom" : "mac",
      "filename" : "small-icon@2x.png",
      "scale" : "2x"
    },
    {
      "size" : "32x32",
      "idiom" : "mac",
      "filename" : "medium-icon.png",
      "scale" : "1x"
    },
    {
      "size" : "32x32",
      "idiom" : "mac",
      "filename" : "medium-icon@2x.png",
      "scale" : "2x"
    },
    {
      "size" : "128x128",
      "idiom" : "mac",
      "filename" : "large-icon.png",
      "scale" : "1x"
    },
    {
      "size" : "128x128",
      "idiom" : "mac",
      "filename" : "large-icon@2x.png",
      "scale" : "2x"
    },
    {
      "size" : "256x256",
      "idiom" : "mac",
      "filename" : "larger-icon.png",
      "scale" : "1x"
    },
    {
      "size" : "256x256",
      "idiom" : "mac",
      "filename" : "larger-icon@2x.png",
      "scale" : "2x"
    },
    {
      "size" : "512x512",
      "idiom" : "mac",
      "filename" : "largest-icon.png",
      "scale" : "1x"
    },
    {
      "size" : "512x512",
      "idiom" : "mac",
      "filename" : "largest-icon@2x.png",
      "scale" : "2x"
    }
  ],
  "info" : {
    "version" : 1,
    "author" : "xcode"
  }
}

      

        
        
        
      

    

I would be very grateful for any information regarding this issue.

Thank.