CommandWrapper mod make player kick

Hi , i’m using spongeforge for 1.8.9 (and the right forge version)
The problem is i have one quest mod (better questing with extension Better questing standard) and in reward the reward send command make the players kick with “Nyuh lost connection: A fatal error has occured, this connection is terminated” error .

Here is the log : https://www.mediafire.com/?cziytab7584bmmy

Thanks in advance.

As far as I can tell, this is be fixed by changing the mod authors downright strange usage of CommandBlockLogic here

Talk to your mod author and get them to just implement ICommandSender if they want to create a custom command source - doing it this way causes Sponge to think that it should have been mixed in a certain way when it actually hasn’t. This is a larger issue at play here (mod/plugin sources not being wrapped correctly), but this a way to patch an issue that shouldn’t really exist in the first place.

I can’t tell any reason why they’d need to override the command block sender, instead of their own. They can grant themselves permissions already, change the name, etc. It’s just… bizarre xD

So i need to ask the mod author ? Because as far as i see he take really long time to respond etc :confused: