Plugin causing errors on the site

Im getting this error on a site i manage and am not sure what to do with it:

[Error] Failed to load resource: the server responded with a status of 403 (Forbidden) (gs_async.js, line 0) https://api.at.getsocial.io/widget/v1/gs_async.js?id=812901Failed to load resource: the server responded with a status of 403 (Forbidden)

Any help would be appreciated!