Unable to open sleep image due to permission issues
Find these keys on your keyboard command+I this will open the get info window

After the windows opens scroll down and click on the sharing &amp; permission

Now if you don't see your username in the filed which appears after clicking on sharing &amp; permissions then add your username (Admin) by clicking on the plus sign

Now if this doesn't works then again click on the plus sign and add Administrator (First check is Administrator is visible in the filed or not after clicking sharing and permission)

After pressing command+i you will get to see a window like this after which you will have to click on the lock icon!



Then enter your password



Now a second overlaying window will appear on your mac screen

Now, You will have to select either your username or administrators and add it to the sharing and permissions field

After that there wouldn't be any permission issues!