No where to start is what's wrong - how is this even possible?

Not logical by just following the numbers but it can definitely be worked out by looking for patterns based on the 2s, 3s and 5s.

I have no idea how to start :(

Has any one any clues? I think I know whats happening but there are so many '1s'.

That's ok Morgano - how about helping us solve this one though?

Right the 3's start in 1,16 5,20 & 9,24.

Thanks Teesea. I was trying to make it work from the corner....

Thank you to both Teesea and Morgano.

Morgano: don't give up on trying to make Hanjies - my first few were awful and I soon got better :-)

Thank you for the image - I would never expect THIS ilusion.

You don't need to test that to see that it's not solvable.
Hint:
If you find a 2x2 square in your puzzle with two black and two white like this / or this , and you can toggle it without changing the numbers at all - then it's not uniquely solvable. Long diagonal lines without anything directly next to them always(!) have that issue: you can invert a part.
Shouldn't be too hard to implement that test..

(There are more issues that are not as easy to detect - so please always test your puzzles)

The image doesn't seem to be working for me. Could someone please post more hints?

Hint: Fill R1C14 and starting at this point, go diagonally in both sides till you reach the borders. There are no black pixels over these two diagonals. You will try to draw an impossible trident with base at C22 R9-13, pointing left & down.

Thank you for the hints Alev!