Unity sprite edge lines are not the same

I created this sprite with Krita and the game is for mobile but the sprite edges are not the same size.
In Krita is everything normal but in unity not.

 

Need more information. It seems that you are using a GameObject with Sprite component to display that, what's the sprite pixel per unit? How should appear the original sprite and what's the size of that?

 

In krita the box is 1024 pixel by 1024 pixel
this is how it should be: UnityForum2Right image
but I didnt find any fix so I removed the lines from the box but i really want to know why this is happening

 

Check the PPU of the sprite (go to Project window -> Select the sprite -> Inspector -> Pixel per Unit and try set 1024