Console error with Co-Citations algorithm

[ElsaTam]

Hi.

I am using your plugin from mine to get some statistics on the links (I'm Kapirklaa on Discord, we briefly talked about it). Everything goes well and I don't think there is any concrete issue resulting from this error, but I just wanted to report it in case it was unknown to you.

With the Co-Citations algorithm, I get this error message in the console:

Which is coming from this line:

As I said, it doesn't prevent the computations to be made and the plugin still manages to get values (that I will assume are correct). If I hadn't the console opened, I wouldn't have known there was an error :)

Thanks a lot for this plugin!