NEED HELP ABOUT THIS ERROR

[Semper Fidelis]

when im doing SPP i receive this error

[Tsudere]

I wonder how many my grf have actually.

Just a guess but I think it's caused by a mistake in the dead animation frame of the monster. You really sure that it's the heal sprite? Such dead animation are often a very big problem. I saw that especially on many pokemon sprites.
You can emergency fix it by replacing the sprites of it with a normal monster like bloody butterfly.
It more seems to be a problem on your server and you should in this board for a fix.

[Semper Fidelis]

so, what part of the sprite can i find it? can you help me locate the sprite for the SLIM POTION PITCHER