We now have a workaround for this error message. We are talking to Google about a fix to SmartSOCIAL CORE to solve this in the longer term. Currently though you can do the below if you really need to get up and running again.
Workaround
- Install the ModHeaders Chrome extension
- Visit and copy all the text displayed here
- Click the ModHeaders icon:

- Click the three dots top right, select 'Import profile(s)' and paste in the copied text.:

- Click Import.
You should now find LinkedIn appears correctly for you.
The error message that this workaround solves
If you are seeing the below message, the above steps provide a solution.