Invalid Token Address using get_token() #173

Hi

I'm not sure if this is an issue or a user error, but when I attempt to get the token details using get_token() for the following contracts I get an error saying 'Invalid Token Address' -

1. 0x431ad2ff6a9c365805ebad47ee021148d6f7dbe0
2. 0x9f8F72aA9304c8B593d555F12eF6589cC3A579A2

I've tried with a heap of other tokens without issue, but these two seem to fail. I've also tried using Versions 1,2 & 3, but the same issue on each.

I get the following exception -

Exception occurred while trying to get token 0x431ad2ff6a9C365805eBaD47Ee021148d6f7DBe0: Python int too large to convert to C ssize_t

I can find the contracts on etherscan, so not sure what I'm doing wrong.

Thanks