Attacking NPC resulting in log message: Cached Animation BZipProcess is null!

[SyntaxCheck 0]

I am working on my first simple chicken killing script and I am seeing a bunch of "Cached Animation BZipProcess is null!" messages in the output log. Below is my script and after the code below I basically just sleep until the NPC dies. Each time my code below runs I see those errors. Are these messages from the Dreambot API? I can't imagine they are a result of the two IF lines?

NPC targetNpc = api.getNpcs().closest((Filter<NPC>) npc -> npc != null && npc.getName().equals(npcName) && startingArea.contains(npc) && npc.getInteractingCharacter() == null && npc.getHealthPercent() > 0);
if (targetNpc != null) {
	api.log("NPC found....");
	double distanceToNpc = api.getLocalPlayer().getTile().distance(targetNpc.getTile());
	api.log("...Calced distance " + distanceToNpc + "....");
	if (distanceToNpc <= maxNpcDistance) {
		api.log("...Interact....");
		//attack target NPC
		if (targetNpc.interact("Attack")) {
			api.log("Attack NPC....");

Output log for the above 

NPC found....
...Calced distance 2.0....
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
...Interact....
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Cached Animation BZipProcess is null!
Attack NPC....

 

[Invidious 1]

I keep getting this. Turn on fresh start if you dont already have it on or delete all your cached data pertaining to dream bot

[SyntaxCheck 0]

Thanks for the hint, it was something to do with the RS cache. Fresh start and manually deleting the RS cache both worked!