Hello, quick question when I run method from TonClient :

client.runMethod(address, 'this-method')

I get for a specific method into validators contract https://tonscan.org/pool/Ef-8i71cS7pz9fuzQCxRNOIx31EzaTPpmsNluGbzJC6cVGHp#source
the following error:

Unsupported stack item type: list

What do I have to add into stacks in order to fetch data from that method?