Solved entity texture problem!

why this error appears?

Code:

21:32:06] [Server thread/CRITICAL]: InvalidArgumentException: "Invalid skin data size 32768 bytes (allowed sizes: 8192, 16384, 65536)" (EXCEPTION) in "src/pocketmine/entity/Skin" at line 80

plz solution...
this is the texture :

 

Either it's a bad texture or you're parsing the png to skin bytes incorrectly.

 

I made this texture using blockbench + Adobe Photoshop ...
Maybe my code has a mistake with calc ?
What should I do? Send the code?

 

After thinking, I was calculating bytes then i found out that I should do 64x * 64x texture...
Thx anyway