LinkedIn Help is aware of the issue and looks like is an open ticket on it -
Invalid consumer key/secret in configuration. We'll keep monitoring this. The APIs change all the time, so if there are any changes that need to be made on our side, we'll implement them. A lot of times for an error like, this is just waiting until the social networks fix the bug and nothing to do from our end.
That twitter thread came from
here
.
-Melissa